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TANIGUCHI Hiromi
| Material Science Division | Professor |
| Physics |
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■ Paper- Photoinduced Metal–Insulator Phase Separation Depending on the Conformational Order of Molecules in β-(BEDT-TTF)2I3
Kensho Nagata; Satoshi Tsuchiya; Koichi Nakagawa; Hiromi Taniguchi; Yasunori Toda
Journal of the Physical Society of Japan, Volume：94, Number：4, Apr. 2025, [Reviewed]
Physical Society of Japan, Scientific journal
DOI：https://doi.org/10.7566/jpsj.94.044701
DOI ID：10.7566/jpsj.94.044701, ISSN：0031-9015, eISSN：1347-4073 - Pressure-induced topological changes in the Fermi surface of a two-dimensional molecular conductor
T. Kobayashi; K. Yoshimi; H. Ma; S. Sekine; H. Taniguchi; N. Matsunaga; A. Kawamoto; Y. Uwatoko
Physical Review Materials, Volume：9, Number：2, Feb. 2025, [Reviewed]
American Physical Society (APS), Scientific journal
DOI：https://doi.org/10.1103/physrevmaterials.9.l021801
DOI ID：10.1103/physrevmaterials.9.l021801, eISSN：2475-9953 - μ+SR Knight shift of the hole-doped organic metal κ-(ET)4Hg3-δCl8 δ =22%
Dita P. Sari; Yipeng Cai; Kenji M. Kojima; Isao Watanabe; Hiromi Taniguchi; Yasuyuki Ishii
Interactions, Volume：245, Number：1, Aug. 2024, [Reviewed]
Springer Science and Business Media LLC, Scientific journal
DOI：https://doi.org/10.1007/s10751-024-02039-0
DOI ID：10.1007/s10751-024-02039-0, eISSN：3005-0731 - Thermoelectric transport properties of the quasi-one-dimensional dimer-Mott insulator β'-(BEDT-TTF)2ICl2
Kyohei Eguchi; Takeru Ito; Yoshiki J. Sato; Ryuji Okazaki; Hiromi Taniguchi
Physical Review Materials, Volume：8, Number：5, May 2024, [Reviewed]
American Physical Society (APS), Scientific journal
DOI：https://doi.org/10.1103/physrevmaterials.8.055402
DOI ID：10.1103/physrevmaterials.8.055402, eISSN：2475-9953 - Mottness and Spin Liquidity in a Doped Organic Superconductor κ-(BEDT-TTF)4Hg2.89Br8
Hiroshi Oike; Hiromi Taniguchi; Kazuya Miyagawa; Kazushi Kanoda
Journal of the Physical Society of Japan, Volume：93, Number：4, Apr. 2024, [Reviewed]
Physical Society of Japan, Scientific journal
DOI：https://doi.org/10.7566/jpsj.93.042001
DOI ID：10.7566/jpsj.93.042001, ISSN：0031-9015, eISSN：1347-4073 - Pseudogap formation in organic superconductors
Shusaku Imajo; Takuya Kobayashi; Yuki Matsumura; Taiki Maeda; Yasuhiro Nakazawa; Hiromi Taniguchi; Koichi Kindo
Physical Review Materials, Volume：7, Number：12, Dec. 2023, [Reviewed]
American Physical Society (APS), Scientific journal
DOI：https://doi.org/10.1103/physrevmaterials.7.124803
DOI ID：10.1103/physrevmaterials.7.124803, eISSN：2475-9953 - Antiferromagnetic ordering and estimation of the exchange interaction in the π−d system λ−(BEDSe−TTF)2FeCl4 studied using C13 NMR
Rikumaru Saito; Takuya Kobayashi; Hiromi Taniguchi; Shuhei Fukuoka; Atsushi Kawamoto
Physical Review B, Oct. 2023, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.108.155112
DOI ID：10.1103/PhysRevB.108.155112, ORCID：143990195 - Role of hydrogen bonding in charge-ordered organic conductor α−(BEDT-TTF)2I3 probed by I127 nuclear quadrupole resonance
T. Kobayashi; Y. Kato; H. Taniguchi; T. Tsumuraya; K. Hiraki; S. Fujiyama
Physical Review B, Volume：108, First page：115108, Sep. 2023, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.108.115108
DOI ID：10.1103/PhysRevB.108.115108, ORCID：141785330 - Magnetic Susceptibility Study of Hole-Doped Organic Metal κ-(ET)4Hg3-δCl8, δ=22% and κ-(ET)4Hg3-δBr8, δ=11%
Dita Puspita Sari; Utami Widyaiswari; Yuta Someya; Eiki Yamada; Hiromi Taniguchi; Isao Watanabe; Yasuyuki Ishii
Solid State Phenomena, Volume：345, First page：47, Last page：52, Jul. 2023, [Reviewed]
Trans Tech Publications, Ltd., Scientific journal
DOI：https://doi.org/10.4028/p-1xerwq
DOI ID：10.4028/p-1xerwq, ISSN：1662-9779, ORCID：140363140 - Thermal Transport of a Layered Organic Mott Insulator κ-(ET)2Cu[N(CN)2]Cl
Tetsuya Furukawa; Hiromi Taniguchi; Takahiko Sasaki
Proceedings of the 29th International Conference on Low Temperature Physics (LT29), Volume：38, First page：011143, May 2023, [Reviewed]
Journal of the Physical Society of Japan, Scientific journal
DOI：https://doi.org/10.7566/jpscp.38.011143
DOI ID：10.7566/jpscp.38.011143, ORCID：137801618 - Ultrafast Optical Spectroscopy in the Normal State of Organic Superconductor β-(BEDT-TTF)2I3
Satoshi Tsuchiya; Kensho Nagata; Hiromi Taniguchi; Yasunori Toda
Proceedings of the 29th International Conference on Low Temperature Physics (LT29), May 2023, [Reviewed]
Journal of the Physical Society of Japan, International conference proceedings
DOI：https://doi.org/10.7566/jpscp.38.011038
DOI ID：10.7566/jpscp.38.011038 - Superconductivity nearby quantum critical region in hole-doped organic strange metal κ-(ET)4Hg3-δBr8, δ=11%
D P Sari; M Kaito; Y Someya; U Widyaiswari; I Watanabe; H Taniguchi; Y Ishii
Journal of Physics: Conference Series, Volume：2462, Number：1, First page：012061, Last page：012061, Mar. 2023, [Reviewed]
Abstract
The hole-doped organic superconductor κ-(ET)4Hg3-δBr8, (κ-HgBr), where δ=11% and ET=bis(ethylenedithio)tetrathiafulvalene, has been the key to bridge the knowledge gap between half-filled organics and doped cuprate systems. Nonetheless, the isotropic triangular lattice of ET dimers of κ-HgBr is responsible for the magnetic susceptibility and its superconductivity. We have measured zero-field (ZF) muon spin relaxation-rotation (µ+SR) in κ-HgBr showing the ZF-µ+SR relaxation rate from temperature around 10 K down to 0.3 K is temperature-independent. This is consistent with a superconducting state that preserved time-reversal symmetry. There was almost no change in the maximally 100 Oe of transverse-field-µ+SR time spectra, at 0.3 K and above superconducting temperature, T c~4.6(3) K. This suggests that the in-plane London penetration depth, λbc, is longer than a μm order, while we estimate the lower limit of the lower critical field, H c1, to be 30 Oe, although, however, the measurement using another geometric setup is necessary to determine the absolute value of λbc. These could be an indication of a strong-coupling superconductor. A possible mechanism of preserved time-reversal Cooper pairing formation from strong-coupling non-FL metal with geometrical frustration is discussed.
IOP Publishing, Scientific journal
DOI：https://doi.org/10.1088/1742-6596/2462/1/012061
DOI ID：10.1088/1742-6596/2462/1/012061, ISSN：1742-6588, eISSN：1742-6596 - Probing uniform and nonuniform charge ordering with polarized femtosecond optical pulses in geometrically frustrated θ−(BEDT−TTF)2MZn(SCN)4(M = Rb,Cs )
K. Nakagawa; S. Tsuchiya; H. Taniguchi; Y. Toda
Physical Review Research, Volume：5, Number：1, Jan. 2023, [Reviewed]
American Physical Society (APS), Scientific journal
DOI：https://doi.org/10.1103/physrevresearch.5.013024
DOI ID：10.1103/physrevresearch.5.013024, eISSN：2643-1564 - μSR investigation of magnetism in ��−(ET)2��: AntiferromagnetismAntiferromagnetism
B. M. Huddart; T. Lancaster; S. J. Blundell; Z. Guguchia; H. Taniguchi; S. J. Clark; F. L. Pratt
Physical Review Research, Volume：5, Number：1, Jan. 2023, [Reviewed]
American Physical Society (APS), Scientific journal
DOI：https://doi.org/10.1103/physrevresearch.5.013015
DOI ID：10.1103/physrevresearch.5.013015, eISSN：2643-1564 - Dynamics of ethylene groups and hyperfine interactions between donor and anion molecules in λ -type organic conductors studied by Ga69,71 -NMR spectroscopy
N. Yasumura; T. Kobayashi; H. Taniguchi; S. Fukuoka; A. Kawamoto
Physical Review B, Dec. 2022, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.106.245103
DOI ID：10.1103/PhysRevB.106.245103, ORCID：124147015 - Antiferromagnetic ordering of organic Mott insulator λ−(BEDSe-TTF)2GaCl4
A. Ito; T. Kobayashi; D. P. Sari; I. Watanabe; Y. Saito; A. Kawamoto; H. Tsunakawa; K. Satoh; H. Taniguchi
Physical Review B, Volume：106, Number：4, Jul. 2022, [Reviewed]
American Physical Society (APS), Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.106.045114
DOI ID：10.1103/PhysRevB.106.045114, ISSN：2469-9950, eISSN：2469-9969, ORCID：115736957 - Magnetic state in the quasi-two-dimensional organic conductor λ−(BEST)2FeCl4 and the path of π−d interaction
Rikumaru Saito; Youhei Iida; Takuya Kobayashi; Hiromi Taniguchi; Noriaki Matsunaga; Shuhei Fukuoka; Atsushi Kawamoto
Physical Review B, Volume：105, Number：16, Apr. 2022, [Reviewed]
American Physical Society ({APS}), Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.105.165115
DOI ID：10.1103/PhysRevB.105.165115, ORCID：111321334 - Mott-Driven BEC-BCS Crossover in a Doped Spin Liquid Candidate κ−(BEDT−TTF)4Hg2.89Br8
Y. Suzuki; K. Wakamatsu; J. Ibuka; H. Oike; T. Fujii; K. Miyagawa; H. Taniguchi; K. Kanoda
Physical Review X, Volume：12, Number：1, Jan. 2022, [Reviewed]
American Physical Society ({APS}), English, Scientific journal
DOI：https://doi.org/10.1103/physrevx.12.011016
DOI ID：10.1103/physrevx.12.011016, ISSN：2160-3308, ORCID：107115001 - Absence of hydrogen bonding in charge-ordered organic conductor α-(BEDT-TTF)2I3 probed by 127I-NQR
Takuya Kobayashi; Y. Kato; Hiromi Taniguchi; Takao Tsumuraya; Ko-ichi Hiraki; Shigeki Fujiyama
2022, [Reviewed]
We present $^{127}$I nuclear quadrupole resonance spectra and nuclear relaxation of $α$-(BEDT-TTF)$_2$I$_3$ that undergoes a charge ordering transition. Only one of the two I$_3$ anion sites shows a significant differentiation in the electric field gradients across the first-order transition, which shows that the anion-donor hybridization through hydrogen bonding is a secondary contribution to the charge ordering. The dominating source for the nuclear relaxation is the local libration of the I$_3$ anions, but an anomalous peak is detected just below the transition, as observed by $^{13}$C NMR.
arXiv
DOI：https://doi.org/10.48550/ARXIV.2208.05602
DOI ID：10.48550/ARXIV.2208.05602, ORCID：117140200 - Ultrafast dynamics of Mott-state quench and formation in strongly correlated BEDT-TTF molecular conductors observed by three-pulse pump probe spectroscopy
S. Tsuchiya; H. Taniguchi; J. Yamada; Y. Toda; D. Mihailovic; T. Mertelj
Physical Review B, Volume：104, Number：11, Sep. 2021, [Reviewed]
American Physical Society (APS), Scientific journal
DOI：https://doi.org/10.1103/physrevb.104.115152
DOI ID：10.1103/physrevb.104.115152, ISSN：2469-9950, eISSN：2469-9969 - Charge disproportionation in the spin-liquid candidate κ−(ET)2Cu2(CN)3 at 6 K revealed by Cu63 NQR measurements
T. Kobayashi; Q.-P. Ding; H. Taniguchi; K. Satoh; A. Kawamoto; Y. Furukawa
Physical Review Research, Oct. 2020, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1103/PhysRevResearch.2.042023
DOI ID：10.1103/PhysRevResearch.2.042023, ORCID：82738660 - Formation of nanoscale polarized clusters as precursors of electronic ferroelectricity probed by conductance noise spectroscopy
Jens Müller; Satoshi Iguchi; Hiromi Taniguchi; Takahiko Sasaki
Physical Review B, Volume：102, Number：10, Sep. 2020, [Reviewed]
American Physical Society (APS), Scientific journal
DOI：https://doi.org/10.1103/physrevb.102.100103
DOI ID：10.1103/physrevb.102.100103, ISSN：2469-9950, eISSN：2469-9969 - Unconventional superconductivity in λ -(BETS) 2GaCl4 probed by C13 NMR
T. Kobayashi; H. Taniguchi; A. Ohnuma; A. Kawamoto
Physical Review B, Sep. 2020, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.102.121106
DOI ID：10.1103/PhysRevB.102.121106, ORCID：80444045 - Spin structure at zero magnetic field and field-induced spin reorientation transitions in a layered organic canted antiferromagnet bordering a superconducting phase
Kohsuke Oinuma; Naoki Okano; Hitoshi Tsunakawa; Shinji Michimura; Takuya Kobayashi; Hiromi Taniguchi; Kazuhiko Satoh; Julia Angel; Isao Watanabe; Yasuyuki Ishii; Hiroyuki Okamoto; Tetsuaki Itou
Physical Review B, Jul. 2020, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.102.035102
DOI ID：10.1103/PhysRevB.102.035102, ORCID：76589651 - Quantum Disordering of an Antiferromagnetic Order by Quenched Randomness in an Organic Mott Insulator
Mizuki Urai; Kazuya Miyagawa; Takahiko Sasaki; Hiromi Taniguchi; Kazushi Kanoda
Physical Review Letters, Mar. 2020, [Reviewed]
Scientific journal
DOI：https://doi.org/10.1103/PhysRevLett.124.117204
DOI ID：10.1103/PhysRevLett.124.117204, ORCID：70836454 - Polarized Time-Resolved Spectroscopy of Electronic Phase Separation in a Dimer-Mott Organic Insulator
Koichi Nakagawa; Satoshi Tsuchiya; Hiromi Taniguchi; Yasunori Toda
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, Mar. 2020, [Reviewed]
The electronic state of the organic single crystal kappa - (2) Cu[N(CN)(2)]Br, in which similar to 50 percent of the BEDT-TTF molecules are substituted by fully deuterated molecules (d-BEDT-TTF), has been characterized by resistance and polarized time-resolved spectroscopy measurements. We found that while the resistance shows no sign of a superconducting transition, the polarized time-resolved spectroscopy reveals a slow decay dynamics associated with the superconducting phase at a low temperature. The result suggests phase separation between the insulating and superconducting phases in the vicinity of the first-order Mott transition. In addition, we found that this slow component shows a steep increase below similar to 18 K, suggesting a fluctuating superconductivity in the conducting domains. Furthermore, the component persists up to at least similar to 50 K, which is almost consistent with the onset temperature of the anomalous magnetic-field-dependent signals observed by the previous Nernst effect measurements (Nam et al. Sci. Rep.3:3390, 2013) of the alloy kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl0.27Br0.73. While interpretation of these anomalies is still debatable, there exists a possibility of the onset of superconducting paring at a very high temperature.
SPRINGER, English, Scientific journal
DOI：https://doi.org/10.1007/s10948-019-05385-1
DOI ID：10.1007/s10948-019-05385-1, ISSN：1557-1939, eISSN：1557-1947, Web of Science ID：WOS:000519605700001 - Lower critical field of layered organic superconductor with asymmetrical donor κ-(Mdt-ttf)
2 aui2
Dita Puspita Sari; Rui Naito; Kaito Miki; Isao Watanabe; Hiromi Taniguchi; Yasuyuki Ishii
Key Engineering Materials, Volume：855 KEM, First page：221, Last page：226, 2020, [Reviewed]
© 2020 Trans Tech Publications Ltd, Switzerland. We report magnetization measurement in the superconducting state of a type-II organic layered superconductor with asymmetrical donor k-(MDT-TTF)2AuI2. The demagnetization factor of a plate-like shape of the single crystal has been taken into account for the measurement by applying an external field perpendicular to the conducting plane. The superconducting transition temperature TC is determined to be 4.7 K through the detection of demagnetization signal. The lower critical field is 10.33±0.12 G. This result implies that the stable vortex state of k-(MDT-TTF)2AuI2 can be reached at the applied magnetic field above 105 Oe.
International conference proceedings
DOI：https://doi.org/10.4028/www.scientific.net/KEM.855.221
Scopus：https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85090807571&origin=inward
Scopus Citedby：https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85090807571&origin=inward
DOI ID：10.4028/www.scientific.net/KEM.855.221, ISSN：1013-9826, eISSN：1662-9795, SCOPUS ID：85090807571 - Polarization-resolved Ultrafast Spectroscopy in an Organic Mott Insulator kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl
Tsuchiya Satoshi; Nakagawa Koichi; Taniguchi Hiromi; Toda Yasunori
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：88, Number：7, Jul. 2019, [Reviewed]
DOI：https://doi.org/10.7566/JPSJ.88.074706
DOI ID：10.7566/JPSJ.88.074706, ISSN：0031-9015, Web of Science ID：WOS:000473520100017 - Disorder unveils Mott quantum criticality behind a first-order transition in the quasi-two-dimensional organic conductor kappa-(ET)(2)Cu[N(CN)(2)]Cl
Urai Mizuki; Furukawa Tetsuya; Seki Yasuhide; Miyagawa Kazuya; Sasaki Takahiko; Taniguchi Hiromi; Kanoda Kazushi
PHYSICAL REVIEW B, Volume：99, Number：24, Jun. 2019, [Reviewed]
We show the significant impact of weak disorder on the Mott transition by investigating electronic transport in a systematically x-ray-irradiated layered organic conductor under continuous pressure control. The critical end point of the first-order Mott transition is dramatically suppressed by such weak disorder that causes only a minor reduction in the transition temperature of disorder-sensitive nodal superconductivity. Instead, quantum critical scaling of resistance holds at lower temperatures and Fermi-liquid coherence temperature on the metallic side is lowered. Introducing disorder unveils the interaction-induced quantum criticality hidden behind the first-order transition.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.99.245139
DOI ID：10.1103/PhysRevB.99.245139, ISSN：2469-9950, eISSN：2469-9969, Web of Science ID：WOS:000473018400005 - Density Wave State in New alpha-Type Organic Conductor, alpha-(BEDT-TTF)(2)MHg(XCN)(4) (M = NH4, X = Se): A Key Material for Universal Phase Diagram of X = S and X = Se Systems
Ohnuma Akihiro; Taniguchi Hiromi; Takahashi Yukihiro; Kawamoto Atsushi
JOURNAL OF PHYSICAL CHEMISTRY C, Volume：122, Number：42, First page：24321, Last page：24328, Oct. 2018, [Reviewed]
A family of organic conductors, alpha-(BEDT-TTF)(2)MHg(SCN)(4), is known to show the density wave (DW) state for M = Tl, K, and Rb salts, or the superconducting (SC) state for M = NH4 salt at low temperatures. In contrast, alpha-(BEDT-TTF)(2)MHg(SeCN)(4) shows no phase transition and retains its metallic characteristics down to low temperatures. Since no alpha-(BEDTTTF)(2)MHg(SeCN)(4) salt shows the DW or SC states, it was unclear whether the system of alpha-(BEDT-TTF)(2)MHg(SeCN)(4) could be understood by the same phase diagram as that of alpha-(BEDT-TTF)(2)MHg(SCN)(4). Here, we succeeded in synthesizing a key material, alpha-(BEDT-TTF)(2)NH4Hg(SeCN)(4), and determined its crystal structure. The temperature dependence of its electric conductivity and spin susceptibility showed its DW state at low temperatures, indicating that the alpha-(BEDT-TTF)(2)MHg(SeCN)(4) system is linked to the alpha-(BEDTTTF)(2)MHg(SCN)(4) system. From the established phase diagram, we found that the dihedral angle between crystallographically independent A and B molecules, Theta(B), and that between A and C molecules, Theta(C), are good tuning parameters as in theta-type BEDT-TTF salts. In the Theta(B)-Theta(C) plot, the SC salt is located in the large Theta(B) and small Theta(C) regions, whereas the metallic salts are located in the small Theta(B) and large Theta(C) regions. The DW salts are located in the intermediate Theta(B) and Theta(C) regions. The relationship between their location in the Theta(B)-Theta(C) plot and the ground states supports the prediction that the local density of state between A and B molecules determines the ground states.
AMER CHEMICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1021/acs.jpcc.8b08912
DOI ID：10.1021/acs.jpcc.8b08912, ISSN：1932-7447, Web of Science ID：WOS:000448754300057 - Zero-field spin structure and spin reorientations in layered organic antiferromagnet, κ-(BEDT-TTF)2Cu[N(CN)2]Cl, with dzyaloshinskii–moriya interaction
Rui Ishikawa; Hitoshi Tsunakawa; Kohsuke Oinuma; Shinji Michimura; Hiromi Taniguchi; Kazuhiko Satoh; Yasuyuki Ishii; Hiroyuki Okamoto
Journal of the Physical Society of Japan, Volume：87, Number：6, 2018, [Reviewed]
Detailed magnetization measurements enabled us to claim that the layered organic insulator κ-(BEDT-TTF)2-Cu[N(CN)2]Cl [BEDT-TTF: bis(ethylenedithio)tetrathiafulvalene] with the Dzyaloshinskii–Moriya interaction has an antiferromagnetic spin structure with the easy axis being the crystallographic c-axis and the net canting moment parallel to the a-axis at zero magnetic field. This zero-field spin structure is significantly different from that proposed in the past studies. The assignment was achieved by arguments including a correction of the direction of the weak ferromagnetism, reinterpretations of magnetization behaviors, and reasoning based on known high-field spin structures. We suggest that only the contributions of the strong intralayer antiferromagnetic interaction, the moderately weak Dzyaloshinskii–Moriya interaction, and the very weak interlayer ferromagnetic interaction can realize this spin structure. On the basis of this model, characteristic magnetic-field dependences of the magnetization can be interpreted as consequences of intriguing spin reorientations. The first reorientation is an unusual spin-flop transition under a magnetic field parallel to the b-axis. Although the existence of this transition is already known, the interpretation of what happens at this transition has been significantly revised. We suggest that this transition can be regarded as a spin-flop phenomenon of the local canting moment. We also claim that half of the spins rotate by 180° at this transition, in contrast to the conventional spin flop transition. The second reorientation is the gradual rotation of the spins during the variation of the magnetic field parallel to the c-axis. In this process, all the spins rotate around the Dzyaloshinskii–Moriya vectors by 90°. The results of our simulation based on the classical spin model well reproduce these spin reorientation behaviors, which strongly support our claimed zero-field spin structure. The present study highlights the intriguing low-field magnetic properties of this material and may evoke further research on the low-field magnetism in this class of materials.
Physical Society of Japan, English, Scientific journal
DOI：https://doi.org/10.7566/JPSJ.87.064701
DOI ID：10.7566/JPSJ.87.064701, ISSN：1347-4073, SCOPUS ID：85046978772, Web of Science ID：WOS:000433589500039 - Photoinduced phase separation with local structural ordering in organic molecular conductors
S. Tsuchiya; K. Nakagawa; J. Yamada; H. Taniguchi; Y. Toda
PHYSICAL REVIEW B, Volume：96, Number：13, Oct. 2017
In this work, polarized pump-probe spectroscopy was carried out to investigate the effects of a structural ordering of molecules on photoinduced phase separation (PIPS) in the organic conductors k-(BEDT-TTF)(2)X [X = Cu[N(CN)(2)]Br (k-Br) and Cu(NCS)(2) (k-NCS)]. We found that the anisotropic response for the probe polarization appeared at around T-g, where the glasslike structural transition occurs. The anisotropy can be a result of a transient destruction of the local ordering of molecules, indicating a connection between the glasslike transition and PIPS. Moreover, we found that the PIPS response gradually develops with decreasing temperature in k-Br, whereas it steeply increases in k-NCS. This qualitative difference suggests that the structural ordering caused by a PIPS is more crucial in k-NCS than in k-Br.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.96.134311
DOI ID：10.1103/PhysRevB.96.134311, ISSN：2469-9950, eISSN：2469-9969, SCOPUS ID：85037104984, Web of Science ID：WOS:000413846900002 - Anomalous metallic behaviour in the doped spin liquid candidate kappa-(ET)(4)Hg2.89Br8
Hiroshi Oike; Yuji Suzuki; Hiromi Taniguchi; Yasuhide Seki; Kazuya Miyagawa; Kazushi Kanoda
NATURE COMMUNICATIONS, Volume：8, Oct. 2017, [Reviewed]
Quantum spin liquids are exotic Mott insulators that carry extraordinary spin excitations. Therefore, when doped, they are expected to afford metallic states with unconventional magnetic excitations. Here, we report experimental results which are suggestive of a doped spin liquid with anomalous metallicity in a triangular-lattice organic conductor. The spin susceptibility is nearly perfectly scaled to that of a non-doped spin liquid insulator in spite of the metallic state. Furthermore, the charge transport that is confined in the layer at high temperatures becomes sharply deconfined on cooling, coinciding with the rapid growth of spin correlations or coherence as signified by a steep decrease in spin susceptibility. The present results substantiate the desired doped spin liquid and suggest a strange metal, in which the coherence of the underlying spin liquid promotes the deconfinement of charge from the layers while preserving the non-Fermi-liquid nature.
NATURE PUBLISHING GROUP, English, Scientific journal
DOI：https://doi.org/10.1038/s41467-017-00941-6
DOI ID：10.1038/s41467-017-00941-6, ISSN：2041-1723, Web of Science ID：WOS:000412053100002 - Dimer-Mott and charge-ordered insulating states in the quasi-one-dimensional organic conductors delta(P)'- and delta(C)'-(BPDT-TTF)(2)ICl2
R. Kobayashi; K. Hashimoto; N. Yoneyama; K. Yoshimi; Y. Motoyama; S. Iguchi; Y. Ikemoto; T. Moriwaki; H. Taniguchi; T. Sasaki
PHYSICAL REVIEW B, Volume：96, Number：11, Sep. 2017
We investigated the electronic states of the quasi-one-dimensional organic salts delta'(P)-(BPDT-TTF)(2)ICl2 and delta'(C)-(BPDT-TTF) 2ICl2, both of which are insulating at room temperature owing to strong electron correlations. Through measurements of electrical resistivity, optical conductivity, and magnetic susceptibility, as well as band-structure calculations, we have revealed that the two materials possess completely different ground states, even though they have the same chemical composition and stacking configuration of the donor molecules. We have found that the delta'(P)-type salt with an effective half-filled band behaves as a dimer-Mott insulator and exhibits a phase transition to a nonmagnetic state at 25 K, whereas the delta'(C)-type salt with a 3/4-filled band shows a charge ordering transition just above room temperature and becomes nonmagnetic below 20 K. The optical spectra of the delta'(P)-type salt are composed of two characteristic bands due to intra-and interdimer charge transfers, supporting the dimer-Mott insulating behavior arising from the strong on-site Coulomb interaction. By contrast, in the delta'(C)-type salt, a single band characterizing the formation of charge ordering arising from the off-site Coulomb interactions is observed. Upon lowering the temperature, the shape of the optical spectra in the delta'(C)-type salt becomes asymmetric and shifts to much lower frequencies, suggesting the emergence of domain-wall excitations with fractional charges expected in a one-dimensional charge-ordered chain. The temperature dependence of the magnetic susceptibility of the delta'(P)-type salt is well described by a two-dimensional (2D) spin-1/2 Heisenberg antiferromagnetic model on an anisotropic square lattice in the dimerized picture, while in the delta'(C)-type salt, it can be explained by a 2D spin-1/2 Heisenberg antiferromagnetic model on an anisotropic honeycomb lattice formed in the charge-ordered state. These completely different ground states between the delta'(P)-and delta'(C)-type salts come from the difference of degree of dimerization of two face-to-face BPDT-TTF molecules.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.96.115112
DOI ID：10.1103/PhysRevB.96.115112, ISSN：2469-9950, eISSN：2469-9969, SCOPUS ID：85030151120, Web of Science ID：WOS:000410001400001 - Electric-field-induced intradimer charge disproportionation in the dimer-Mott insulator beta '-(BEDT-TTF)(2)ICl2
Yuma Hattori; Satoshi Iguchi; Takahiko Sasaki; Shinichiro Iwai; Hiromi Taniguchi; Hideo Kishida
PHYSICAL REVIEW B, Volume：95, Number：8, Feb. 2017, [Reviewed]
Raman scattering spectra of the dimer-Mott insulator beta '-(BEDT-TTF)(2)ICl2 [BEDT-TTF = bis(ethylenedithio) tetrathiafulvalene] under a static electric field are investigated. The application of the electric field induces two additional Raman peaks on both sides of the original peak position of the charge-sensitive Raman mode (mu(2)) in the spectra. At 10 kV/cm, the original peak almost disappears and only the newly emerging peaks are observed. The emergence of these peaks indicates the field-induced charge disproportionation within the dimer. The temporal change of the Raman signals with the inversion of the electric field suggests a macroscopic domain formation of the charge-disproportionate dimers. This picture is reinforced by the direct measurement of the polarization.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.95.085149
DOI ID：10.1103/PhysRevB.95.085149, ISSN：2469-9950, eISSN：2469-9969, Web of Science ID：WOS:000395993100003 - Studies on Magnetism of the Layered Organic Antiferromagnet Bordered on a Superconducting Phase by Muon Spin Rotation and Magnetization Measurements
Tomotaka Uehara; Miho Ito; Julia Angel; Junichi Shimada; Nobuhiro Komakine; Takumi Tsuchiya; Hiromi Taniguchi; Kazuhiko Satoh; Kuwat Triyana; Yasuyuki Ishii; Isao Watanabe
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：85, Number：2, Mar. 2016, [Reviewed]
The magnetism of deuterated kappa-(BEDT-TTF)(2)Cu[ N(CN)(2)]Br, which was situated in the vicinity of a superconductor-antiferromagnet phase boundary, was investigated by magnetization and muon spin rotation (mu SR) measurements. Magnetic ordering was observed by mu SR measurement under the zero-field condition. Internal fields at muon sites were lower than those of kappa-(BEDT-TTF)(2)Cu[ N(CN)(2)]Cl. The magnetic transition temperature T-N was found to be increased by applying a magnetic field in the magnetization measurements. These two measurements enabled us to conclude that T-N at zero field was 11.8 0.7 K, which was significantly lower than the value reported in NMR studies (14-15 K). This finding suggests that this material undergoes Nel order and Mott transition at very close but separated temperatures.
PHYSICAL SOC JAPAN, English, Scientific journal
DOI：https://doi.org/10.7566/JPSJ.85.024710
DOI ID：10.7566/JPSJ.85.024710, ISSN：0031-9015, Web of Science ID：WOS:000369250800021 - Crystal Growth of the Layered Organic Antiferromagnet, Deuterated kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br
Julia Angel; Tomotaka Uehara; Junichi Shimada; Nobuhiro Komakine; Takumi Tsuchiya; Hiromi Taniguchi; Isao Watanabe; Kuwat Triyana
ADVANCES OF SCIENCE AND TECHNOLOGY FOR SOCIETY, Volume：1755, 2016, [Reviewed]
A large single crystal is often required for the measurements of physical quantities such as specific heat, magnetization, and NMR, etc. This is because the signals in such measurements are proportional to the size of the crystal. For this requirement, we tried to synthesize large single crystals of organic material. In this letter, detailed procedures for the synthesis of large and high-quality single crystals of the layered organic antiferromagnet, deuterated kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br, are reported. An electrochemical method with controlling applied current was used in order to grow large and high-quality single crystals. As a result, we successfully obtained several large crystals of which weighing in 9.45, 15.13 and 18.59 mg. These crystals are comparable to, or larger than the crystals used in previous researches, and the crystal of 18.59 mg is almost two times larger than the largest crystal reported so far. The Laue diffraction pattern of the smallest one of those single crystals has a good orders diffraction spots. This indicates that the obtained crystal is a single crystal.
AMER INST PHYSICS, English, International conference proceedings
DOI：https://doi.org/10.1063/1.4958584
DOI ID：10.1063/1.4958584, ISSN：0094-243X, Web of Science ID：WOS:000383024100119 - Electrical Transport in the Quasi-Two-Dimensional Ionic Mott Insulator M2P-TCNQF(4) under High Pressures
Ryosuke Takehara; Kazuya Miyagawa; Tatsuya Miyamoto; Hiroshi Okamoto; Hiromi Taniguchi; Kazuyuki Matsubayashi; Yoshiya Uwatoko; Kazushi Kanoda
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：84, Number：10, Oct. 2015, [Reviewed]
We performed electrical resistivity measurements for the quasi-two-dimensional ionic Mott insulator M2P-TCNQF(4) (M2P: 5,10-dihydro-5,10-dimethylphenazine, TCNQF(4): 2,3,5-tetrafluoro-7,7,8,8-tetracyanoquinodimethane) under high pressures up to 80 kbar, to search for a metallic state emerging from an ionic insulator. At room temperature, the resistivity is markedly decreased by five orders of magnitude with increasing pressure up to 80 kbar. Although the temperature dependence of resistivity shows insulating behavior at 80 kbar, the activation energy of 0.36 eV at ambient pressure is reduced to 0.077 eV at 80 kbar, indicating that the system is brought close to the metallic state. At 60 and 80 kbar, low-temperature resistivity is described by variable range hopping rather than by thermal activation over a gap, which suggests that some disorder is induced in the system at high pressures.
PHYSICAL SOC JAPAN, English, Scientific journal
DOI：https://doi.org/10.7566/JPSJ.84.104702
DOI ID：10.7566/JPSJ.84.104702, ISSN：0031-9015, Web of Science ID：WOS:000361156300008 - Emergence of charge degrees of freedom under high pressure in the organic dimer-Mott insulator β′-(BEDT - TTF) 2 ICl 2
K. Hashimoto; R. Kobayashi; H. Okamura; H. Taniguchi; Y. Ikemoto; T. Moriwaki; S. Iguchi; M. Naka; S. Ishihara; T. Sasaki
Physical Review B - Condensed Matter and Materials Physics, Volume：92, Number：8, Aug. 2015, [Reviewed]
To elucidate the pressure evolution of the electronic structure in an antiferromagnetic dimer-Mott (DM) insulator β′-(BEDT-TTF)2ICl2, which exhibits superconductivity at 14.2 K under 8 GPa, we measured the polarized infrared (IR) optical spectra under high pressure. At ambient pressure, two characteristic bands due to intra- and interdimer charge transfers have been observed in the IR spectra, supporting that this salt is a typical half-filled DM insulator at ambient pressure. With increasing pressure, however, the intradimer charge transfer excitation shifts to much lower energies, indicating that the effective electronic state changes from half-filled to 3/4-filled as a result of weakening of dimerization. This implies that the system approaches a charge-ordered state under high pressure, in which charge degrees of freedom emerge as an important factor. The present results suggest that charge fluctuation inside of dimers plays an important role in the high-temperature superconductivity.
American Physical Society, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.92.085149
DOI ID：10.1103/PhysRevB.92.085149, ISSN：1550-235X, SCOPUS ID：84941101602 - Emergence of charge degrees of freedom under high pressure in the organic dimer-Mott insulator beta '-(BEDT-TTF)(2)ICl2
K. Hashimoto; R. Kobayashi; H. Okamura; H. Taniguchi; Y. Ikemoto; T. Moriwaki; S. Iguchi; M. Naka; S. Ishihara; T. Sasaki
PHYSICAL REVIEW B, Volume：92, Number：8, Aug. 2015, [Reviewed]
To elucidate the pressure evolution of the electronic structure in an antiferromagnetic dimer-Mott (DM) insulator beta'-(BEDT-TTF)(2)ICl2, which exhibits superconductivity at 14.2 K under 8 GPa, we measured the polarized infrared (IR) optical spectra under high pressure. At ambient pressure, two characteristic bands due to intra-and interdimer charge transfers have been observed in the IR spectra, supporting that this salt is a typical half-filled DM insulator at ambient pressure. With increasing pressure, however, the intradimer charge transfer excitation shifts to much lower energies, indicating that the effective electronic state changes from half-filled to 3/4-filled as a result of weakening of dimerization. This implies that the system approaches a charge-ordered state under high pressure, in which charge degrees of freedom emerge as an important factor. The present results suggest that charge fluctuation inside of dimers plays an important role in the high-temperature superconductivity.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.92.085149
DOI ID：10.1103/PhysRevB.92.085149, ISSN：2469-9950, eISSN：2469-9969, Web of Science ID：WOS:000360284500001 - Quantum Spin Liquid Emerging from Antiferromagnetic Order by Introducing Disorder
T. Furukawa; K. Miyagawa; T. Itou; M. Ito; H. Taniguchi; M. Saito; S. Iguchi; T. Sasaki; K. Kanoda
PHYSICAL REVIEW LETTERS, Volume：115, Number：7, Aug. 2015, [Reviewed]
Quantum spin liquids, which are spin versions of quantum matter, have been sought after in systems with geometrical frustration. We show that disorder drives a classical magnet into a quantum spin liquid through conducting NMR experiments on an organic Mott insulator, kappa-(ET)(2)Cu[N(CN)(2)]Cl. Antiferromagnetic ordering in the pristine crystal, when irradiated by x rays, disappears. Spin freezing, spin gap, and critical slowing down are not observed, but gapless spin excitations emerge, suggesting a novel role of disorder that brings forth a quantum spin liquid from a classical ordered state.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevLett.115.077001
DOI ID：10.1103/PhysRevLett.115.077001, ISSN：0031-9007, eISSN：1079-7114, SCOPUS ID：84939544223, Web of Science ID：WOS:000359357100005 - Zero-Field Magnetism of a Two-Dimensional Antiferromagnet, kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl, Determined by Muon Spin Rotation and Magnetization Measurements
Miho Ito; Tomotaka Uehara; Hiromi Taniguchi; Kazuhiko Satoh; Yasuyuki Ishii; Isao Watanabe
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：84, Number：5, May 2015, [Reviewed]
The zero-field magnetism of a two-dimensional noncollinear antiferromagnet, kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl, has been investigated by magnetization and zero-field muon spin rotation (mu SR) measurements. Low-field magnetization measurements enabled us to determine the magnetic transition temperature T-N as 22.80 +/- 0.02 K. Distinct muon spin precession signals appeared below 21.4 K. mu SR spectra below 21.4 K were well described by two types of precession components and a relaxation one. The temperature dependence of internal field converted by mu SR data was in good agreement with that of macroscopic residual magnetism. These results suggest that the tiny interlayer interaction, which has been suggested to be almost 10(6) times less than the intralayer exchange interaction, spontaneously causes the three-dimensional long-range order.
PHYSICAL SOC JAPAN, English, Scientific journal
DOI：https://doi.org/10.7566/JPSJ.84.053703
DOI ID：10.7566/JPSJ.84.053703, ISSN：0031-9015, Web of Science ID：WOS:000353646600004 - Quantum criticality of Mott transition in organic materials
Tetsuya Furukawa; Kazuya Miyagawa; Hiromi Taniguchi; Reizo Kato; Kazushi Kanoda
NATURE PHYSICS, Volume：11, Number：3, First page：221, Last page：224, Mar. 2015, [Reviewed]
A many-body quantum system on the verge of instability between two competing ground states may exhibit quantum-critical phenomena(1,2), as has been intensively studied for magnetic systems. The Mott metal-insulator transition(3), a phenomenon that is central to many investigations of strongly correlated electrons, is also supposed to be quantum critical, although this has so far not been demonstrated experimentally. Here, we report experimental evidence for the quantum-critical nature of the Mott instability, obtained by investigating the electron transport of three organic systems with different ground states under continuously controlled pressure. The resistivity obeys the material-independent quantum-critical scaling relation bifurcating into a Fermi liquid or Mott insulator, irrespective of the ground states. Electrons on the verge of becoming delocalized behave like a strange quantum-critical fluid before becoming a Fermi liquid.
NATURE PUBLISHING GROUP, English, Scientific journal
DOI：https://doi.org/10.1038/NPHYS3235
DOI ID：10.1038/NPHYS3235, ISSN：1745-2473, eISSN：1745-2481, SCOPUS ID：84924175898, Web of Science ID：WOS:000350674700011 - Electron transport in TTF-CA under High pressures
Ryosuke Takehara; Kazuya Miyagawa; Kazushi Kanoda; Tatsuya Miyamoto; Hiroyuki Matsuzaki; Hiroshi Okamoto; Hiromi Taniguchi; Kazuyuki Matsubayashi; Yoshiya Uwatoko
PHYSICA B-CONDENSED MATTER, Volume：460, First page：83, Last page：87, Mar. 2015, [Reviewed]
We investigate the electron transport in the neutral-ionic transition material, tetrathialulvalene-p-chloranil (TTF-CA), under extremely high pressures up to 82.5 kbar, using a cubic anvil system. At room temperature, as pressure is applied, the resistivity steeply decreases in the neutral phase and exhibits a minimum followed by an increase, which reproduces the previously reported results. However, resistivity is found to become insensitive to pressure above 20 kbar, where the ionic phase is stabilized. The robust transport characteristics of the ionic phase is in contrast with the pressure-sensitive transport in the neutral phase. The temperature dependence of resistivity is insulating in the whole pressure range up to 82.5 kbar but shows breaks in the activation plot at certain temperatures, suggesting that some phase transition occurs in the ionic phase. (C) 2014 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.physb.2014.11.045
DOI ID：10.1016/j.physb.2014.11.045, ISSN：0921-4526, eISSN：1873-2135, Web of Science ID：WOS:000350808300018 - Pressure-Induced Mott Transition in an Organic Superconductor with a Finite Doping Level
H. Oike; K. Miyagawa; H. Taniguchi; K. Kanoda
PHYSICAL REVIEW LETTERS, Volume：114, Number：6, Feb. 2015
We report the pressure study of a doped organic superconductor with a Hall coefficient and conductivity measurements. We find that maximally enhanced superconductivity and a marginal-Fermi liquid appear around a certain pressure where mobile carriers increase critically, suggesting a possible quantum phase transition between strongly and weakly correlated regimes. This observation points to the presence of a criticality in Mottness for a doped Mott insulator with tunable correlation.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevLett.114.067002
DOI ID：10.1103/PhysRevLett.114.067002, ISSN：0031-9007, eISSN：1079-7114, SCOPUS ID：84922770432, Web of Science ID：WOS:000350244900014 - Magnetic transition in dimerized radical cation salt of (BPDT-TTF)(2)ICl2 studied by heat capacity measurements
Guoyang Guan; Shuhei Fukuoka; Satoshi Yamashita; Takashi Yamamoto; Hiromi Taniguchi; Yasuhiro Nakazawa
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, Volume：113, Number：3, First page：1197, Last page：1201, Sep. 2013, [Reviewed]
Thermodynamic investigation using the relaxation calorimetry technique and the microchip calorimetry technique is performed to clarify low-temperature behaviors of a radical cation salt consisting of a donor molecule of bispropylenedithiotetrathiafulvalene (BPDT-TTF) and a linear anion of . This compound has a layered structure similar to numerous BEDT-TTF compounds. The donor molecules form a dimerized arrangement in the layer. Temperature dependence of heat capacity obtained by the relaxation technique shows a broad hump structure around 20-25 K corresponding to the temperature where the magnetic susceptibility shows a drastic decrease due to the formation of the singlet spin state. The microchip calorimetry technique detected a step-like anomaly around 23 K in the temperature dependence of C (p) T (-1) of which entropy is evaluated as only few % of Rln2 corresponding to the full entropy of localized pi-electrons located on each dimer unit. The negligibly small T-linear term in the low-temperature heat capacity and absence of magnetic fields dependence below 3.2 K predict opening of rigid gap structure in the spin excitations, which is consistent with a spin-singlet formation due to the formation of spin-Peierls type ordering or charge ordering state.
SPRINGER, English, Scientific journal
DOI：https://doi.org/10.1007/s10973-013-3015-5
DOI ID：10.1007/s10973-013-3015-5, ISSN：1388-6150, Web of Science ID：WOS:000323503300025 - Superconducting fluctuation of the layered organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br in magnetic susceptibility
Tomotaka Uehara; Miho Ito; Hiromi Taniguchi; Kazuhiko Satoh
Journal of the Physical Society of Japan, Volume：82, Number：7, Jul. 2013, [Reviewed]
A quasi-two-dimensional organic superconductor, κ-(BEDT-TTF) 2Cu[N(CN)2]Br [BEDT-TTF: bis(ethylenedithio)- tetrathiafulvalene], showed fluctuation behavior of superconductivity up to approximately 19 K, which was far higher than the zero-field transition temperature Tc (= 11:6 K). We measured magnetic susceptibility under a magnetic field parallel and perpendicular to the conducting layers and determined the susceptibility difference ΔΧ between the parallel-field and perpendicular-field susceptibilities as functions of temperature and magnetic field. From the analysis of the magnetic field evolution of ΔΧ, we deduced that ΔΧ was composed of anisotropy in normal-state magnetic properties and superconducting fluctuations. From the investigation of ΔΧ in the low-field region, we derived that the fluctuation component was proportional to (T - Tc)α with a constant α (-2:3 <
α <
-2:0) or to T(T - Tc)β with a constant β (-2:4 <
β <
-2:1). © 2013 The Physical Society of Japan.
English, Scientific journal
DOI：https://doi.org/10.7566/JPSJ.82.073706
DOI ID：10.7566/JPSJ.82.073706, ISSN：0031-9015, SCOPUS ID：84879813260, Web of Science ID：WOS:000321121100012 - Relaxor ferroelectricity induced by electron correlations in a molecular dimer Mott insulator
S. Iguchi; S. Sasaki; N. Yoneyama; H. Taniguchi; T. Nishizaki; T. Sasaki
PHYSICAL REVIEW B, Volume：87, Number：7, Feb. 2013
We have investigated the dielectric response in an antiferromagnetic dimer-Mott insulator beta'-(BEDT-TTF)(2)ICl2 with square dimer lattice, compared to a spin liquid candidate kappa-(BEDT-TTF)(2)Cu-2(CN)(3). Temperature dependence of the dielectric constant shows a peak structure obeying Curie-Weiss law with a strong frequency dependence. We found an anisotropic glassy ferroelectricity by pyrocurrent measurements, which suggests the charge disproportionation resulting in an electric dipole in a dimer. Each ferroelectric and antiferromagnetic transition temperature is closely related to the antiferromagnetic interaction energy and a freezing temperature of dipole dynamics in a dimer, respectively. These correspondences suggest the possible charge-spin coupled degrees of freedom in the system. DOI: 10.1103/PhysRevB.87.075107
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.87.075107
DOI ID：10.1103/PhysRevB.87.075107, ISSN：1098-0121, SCOPUS ID：84874530778, Web of Science ID：WOS:000314761500001 - C-13-NMR studies of the paramagnetic and charge-ordered states of the organic superconductor beta ''-(BEDT-TTF)(3)Cl-2 center dot 2H(2)O under pressure
Sanato Nagata; Takashi Ogura; Atsushi Kawamoto; Hiromi Taniguchi
PHYSICAL REVIEW B, Volume：84, Number：3, Jul. 2011, [Reviewed]
beta ''-(BEDT-TTF)(3)Cl-2 center dot 2H(2)O [BEDT-TTF: bis-(ethylenedithio)tetrathiafulvalene] is superconductive under pressures, whereas the salt exhibits metal-insulator (MI) transition under ambient pressure. The insulator phase in the salt was examined using the charge density wave (CDW) phase that was obtained from band calculation. The charge-ordered (CO) state was recently proposed as the insulator phase of the salt, and the mechanism of superconductivity intermediated by charge fluctuation was suggested. We accessed C-13-NMR on beta ''-(BEDT-TTF)(3)Cl-2 center dot 2H(2)O at ambient pressure and under pressure up to 1.6 GPa. At ambient pressure, the NMR spectrum changed at approximately 100 K. Three isolated peaks appeared at low temperatures, suggesting that the CO state exists below 100 K, and spin-gap behavior was observed. By analyzing the chemical shift, the charges on the three sites were estimated as similar to+0.4e, similar to+0.6e, and similar to+1.0e. The ratio of peak intensity and unsymmetrical peak position suggest the CO state with some symmetry breaking. When pressure is applied, the splitting of the NMR peaks in the CO state is reduced. The salt finally exhibits superconductivity at 1.6 GPa, spin-gap behavior observed at (T1T)(1) below 1.3 GPa suddenly disappears, whereas the NMR spectrum predicts that charge disproportionation coexists with superconductivity. The suppression of the spin-singlet formation observed in (T1T)(-1) at 1.6 GPa suggests the metallic state with the charge disproportionation and the CO instability with some symmetry breaking.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.84.035105
DOI ID：10.1103/PhysRevB.84.035105, ISSN：1098-0121, Web of Science ID：WOS:000292824700003 - (13) C-NMR study of kappa-(BEDT-TTF)(2) Cu(NCS)(2) under pressure
M. Itaya; Y. Eto; A. Kawamoto; H. Taniguchi
PHYSICA B-CONDENSED MATTER, Volume：405, Number：11, First page：S259, Last page：S261, Jun. 2010, [Reviewed]
We measured the C-13-NMR spectrum and T-1 of kappa-(BEDT - TTF)(2)Cu(NCS)(2) under pressure Both of Knight shift and 1/T1T showed the temperature Independent behavior at low temperature under all pressures therefore It is suggested that this material behaves as Fermi liquid at this region Pressure dependence of Knight shift at low temperature cannot account the strong pressure dependence of the m*(c) which observed by Shubnikov-de Haas (S-dH) measurement On the other hand pressure dependence of Korringa factor calculated from Knight shift and 1/T1T, is similar to that of the m*(c) These results suggest that anti-ferromagnetic (AF) fluctuations contribute to the superconductivity in this material (C) 2010 Elsevier B V All rights reserved
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.physb.2009.12.086
DOI ID：10.1016/j.physb.2009.12.086, ISSN：0921-4526, SCOPUS ID：84859917250, Web of Science ID：WOS:000283808400075 - Short piston-cylinder pressure cells based on Ni-Cr-Al cylinders and their application to fragile materials
Hiromi Taniguchi; Sunao Takeda; Ryosuke Satoh; Arisa Taniguchi; Hiroaki Komatsu; Kazuhiko Satoh
REVIEW OF SCIENTIFIC INSTRUMENTS, Volume：81, Number：3, Mar. 2010, [Reviewed]
In this decade, the performance of piston-cylinder pressure cells has been drastically improved by using robust materials such as nickel-chromium-aluminum and cobalt-nickel-chromium-molybdenum alloys to construct the inner cylinders. In this article, we present several experimental techniques for carrying out resistivity measurements under high pressure by applying the piston-cylinder devices based on the nickel-chromium-aluminum cylinders to fragile materials such as organics. These techniques are, in principle, applicable to measurements on any solid-state conductor. First, we introduce the construction of our piston-cylinder cells including two kinds of wired platforms for transport measurements. Second, we describe the construction of the platforms and the method of introducing the samples. After reporting test results for conventional materials such as ammonium fluoride, bismuth, and tellurium, lastly, we present examples of the successful application of our method to organic materials.
AMER INST PHYSICS, English, Scientific journal
DOI：https://doi.org/10.1063/1.3310197
DOI ID：10.1063/1.3310197, ISSN：0034-6748, Web of Science ID：WOS:000276210200036 - Past, present, and future pressure effect on organic superconductors
Hiromi Taniguchi
Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu, Volume：20, Number：2, First page：109, Last page：116, 2010, [Reviewed]
In this article, history, recent development, future perspective of pressure effect on organic superconductors were reviewed. After describing how the organic superconductor was born, pressure-temperature phase diagrams of two representing organic superconductors were introduced. Next we present several examples of various type of the phase diagrams of the organic superconductors that were recently discovered or attracted. Finally, possible strategies for the development of the novel superconductors are mentioned.
English, Scientific journal
DOI：https://doi.org/10.4131/jshpreview.20.109
DOI ID：10.4131/jshpreview.20.109, ISSN：0917-639X, SCOPUS ID：77954558692 - Inhomogeneous spin state in the organic conductor kappa-(BEDT-TTF)(4)Hg2.78Cl8
Yosuke Kurosaki; Akira Furuta; Hiromi Taniguchi; Kazuya Miyagawa; Kazushi Kanoda
PHYSICA B-CONDENSED MATTER, Volume：404, Number：19, First page：3138, Last page：3140, Oct. 2009, [Reviewed]
The static and dynamical local spin susceptibility of the nonstoichiometric organic conductor, kappa-(BEDT-TTF)(4)Hg2.78Cl8, is studied by C-13 NMR spectroscopy from room temperature down to 1.7 K. We observe a gradual growth of inhomogeneity in the spin state as a spectral broadening down to the lowest temperature, which is sustained even under 0.4GPa but suppressed under 0.8GPa. The emergence of the inhomogeneity is discussed in the light of the doped triangular-lattice Mott insulator. (C) 2009 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.physb.2009.07.070
DOI ID：10.1016/j.physb.2009.07.070, ISSN：0921-4526, Web of Science ID：WOS:000271357300068 - Antiferromagnetic Fluctuations in the Organic Superconductor kappa-(BEDT-TTF)(2)Cu(NCS)(2) under Pressure
Megumi Itaya; Yoshihiro Eto; Atsushi Kawamoto; Hiromi Taniguchi
PHYSICAL REVIEW LETTERS, Volume：102, Number：22, First page：227003 1-4, Jun. 2009, [Reviewed]
We measured the C-13-NMR spectrum and T-1 of the quasi-two-dimensional organic superconductor kappa-(BEDT-TTF)(2)Cu(NCS)(2) under pressure. This material was thought to show a relationship between T-c and the effective cyclotron mass m(c)(*), obtained from the Shubnikov-de Haas (SdH) effect. We found that kappa-(BEDT-TTF)(2)Cu(NCS)(2) behaved as a Fermi liquid at low temperature under all pressures, and antiferromagnetic fluctuations were expected. The pressure dependence of the Korringa factor is similar to that of the effective cyclotron mass m(c)(*), suggesting that antiferromagnetic fluctuations contribute to the superconductivity of this material. We also found that, under pressure, T-* was shifted to 150 K, the temperature characteristic of the shift from bad metal to good metal.
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevLett.102.227003
DOI ID：10.1103/PhysRevLett.102.227003, ISSN：0031-9007, eISSN：1079-7114, Web of Science ID：WOS:000266685400048 - mu SR study of an layered organic superconductor kappa-(BEDT-TTF)(4)Hg2.89Br8
Kazuhiko Satoh; Hidemi Fujita; Kazuhiro Katayama; Hiromi Taniguchi; Takashi U. Ito; Kazuki Ohishi; Wataru Higemoto
PHYSICA B-CONDENSED MATTER, Volume：404, Number：5-7, First page：597, Last page：599, Apr. 2009, [Reviewed]
Zero-field muon spin relaxation and high-field transverse muon spin rotation have been measured for an organic superconductor kappa-(BEDT-TTF)(4)Hg2.89Br8. No anomaly is found in zero-field relaxation spectrum at the superconducting transition temperature, 4.2 K. The muon Knight shift determined by transverse muon spin rotation at 6T exhibits Curie-Weiss like behavior down to 2 K, whereas static magnetic susceptibility shows a peak around 30K. The muon Knight shift does not scale with the magnetic susceptibility at low temperatures. (C) 2008 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.physb.2008.11.122
DOI ID：10.1016/j.physb.2008.11.122, ISSN：0921-4526, eISSN：1873-2135, Web of Science ID：WOS:000265469800007 - mu SR study of organic antiferromagnet beta '-(BEDT-TTF)(2)ICl2 under high pressure
Kazuhiko Satoh; Koichi Sato; Tetsushige Yoshida; Hiromi Taniguchi; Tatsuo Goko; Takashi U. Ito; Kazuki Ohishi; Wataru Higemoto
PHYSICA B-CONDENSED MATTER, Volume：404, Number：5-7, First page：600, Last page：602, Apr. 2009, [Reviewed]
Zero-field muon spin relaxation was measured for organic antiferromagnet beta '-(BEDT-TTF)(2)ICl2 under high pressure of up to 1.37 GPa. Although major contribution of spectrum comes from the high-pressure cell, we can detect precession signal from beta'-(BEDT-TFF)(2)ICl2 below Neel temperature. Neel temperature, which is 22K at ambient pressure, increases with increasing pressure and becomes approximately 48 K at 137 GPa. Muon precession frequency at 1.37 GPa, becomes about 5 times larger than that at ambient pressure. (C) 2008 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.physb.2008.11.121
DOI ID：10.1016/j.physb.2008.11.121, ISSN：0921-4526, Web of Science ID：WOS:000265469800008 - Contactless conductivity measurements on the organic conductor, kappa-(ET)(4)Hg2.89Br8, under pressure
Hiroshi Oike; Kazuya Miyagawa; Kazushi Kanoda; Hiromi Taniguchi; Keizo Murata
PHYSICA B-CONDENSED MATTER, Volume：404, Number：3-4, First page：376, Last page：378, Mar. 2009, [Reviewed]
The conductivity of the organic conductor, kappa-(ET)(4)Hg2.89Br8, which is regarded as a doped-Mott insulator, was investigated through AC susceptibility measurements using the LC resonance circuit in a temperature range of 1.5-20 K and a pressure range of 0-3.0 GPa. The bulk superconducting transition was observed in a pressure range below 1.7 GPa. In the normal state, AC susceptibility probes the in-plane resistivity, rho(parallel to) through the skin depth. The analysis of the susceptibility shows that the temperature dependence of rho(parallel to) is T-linear at low pressures and gradually changed to T-squared variation with increasing pressure. (C) 2008 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.physb.2008.11.023
DOI ID：10.1016/j.physb.2008.11.023, ISSN：0921-4526, Web of Science ID：WOS:000264227400012 - Superconductivity induced by extremely high pressures in organic Mott-insulator beta '-(BEDT-TTF)(2)IBrCl
M. Kano; K. Uchiyama; H. Taniguchi; M. Hedo; K. Matsubayashi; Y. Uwatoko
25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 5, Volume：150, 2009
Previous research revealed that, at a pressure of 8.2 GPa, beta'-(BEDT-TTF)(2)ICl2 possesses the highest transition temperature (T-C) among the organic conductors[1]. In the present work, transport studies under extremely high pressure of up to 10.0 GPa, using a cubic anvil press are reported for a related material, beta'-(BEDT-TTF)(2)IBrCl which is an organic Mott-insulator in ambient pressure. Superconductivity with the highest T-C (8.5 K, onset) was observed at P = 8.6 GPa.
IOP PUBLISHING LTD, English, International conference proceedings
DOI：https://doi.org/10.1088/1742-6596/150/5/052093
DOI ID：10.1088/1742-6596/150/5/052093, ISSN：1742-6588, SCOPUS ID：77952515225, Web of Science ID：WOS:000289688600093 - Transport properties of an organic Mott insulator beta '-(BEDT-TTF)(2)ICl(2)
N. Tajima; R. Kato; H. Taniguchi
EPL, Volume：83, Number：2, First page：27008 1-5, 2008, [Reviewed]
We have investigated the temperature dependence of the Hall coefficient and the resistivity of an organic Mott insulator, beta '-(BEDT-TTF)(2)ICl(2) under ambient and hydrostatic pressures up to 2GPa. The charge gap, Delta, the effective mass, m*, and the scattering lifetime of carriers on Mott Hubbard bands were evaluated by analyzing these transport properties. We found that m* and Delta are written approximately as 1/m* infinity (1 - Delta/U(eff)) in the low-pressure region and obtained the value of the effective on-site Coulomb energy, U(eff), of similar to 445meV. Moreover, we reveal that the effective scattering lifetime is proportional to the average distance between carriers in the two-dimensional plane, which suggests the existence of a scattering process attributable to carrier-carrier umklapp scattering in the Mott insulating state. Copyright (C) EPLA, 2008.
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY, English, Scientific journal
DOI：https://doi.org/10.1209/0295-5075/83/27008
DOI ID：10.1209/0295-5075/83/27008, ISSN：0295-5075, SCOPUS ID：79051469048, Web of Science ID：WOS:000259021200022 - Anomalous pressure dependence of superconductivity in layered organic conductor, K-(BEDT-TTF)(4)Hg2.89Br8
Hiromi Taniguchi; Takahiro Okuhata; Takuya Nagai; Kazuhiko Satoh; Nobuo Mori; Yasuhiro Shimizu; Masato Hedo; Yoshiya Uwatoko
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：76, Number：11, First page：113709 1-4, Nov. 2007, [Reviewed]
The P-T phase diagram and transport properties of a layered organic superconductor, kappa-(BEDT-TTF)(4)Hg2.89Br8, which can be viewed as a nealy half-filled band system, are reported. Through careful resistivity measurements under pressures of up to 4.5GPa, we uncovered anomalous pressure dependence of T-c of this superconductor, including a peak structure at approximatly 0.7GPa and a minimum structure at higher pressure. The normal-state resistivity showed T-linear behavior at low pressures and this behavior gradually transformed into T-squared behavior with increasing pressure. The pressure, P-c approximate to 2GPa, at which T-c has a turning value, corresponds to the onset of the T-squared behavior.
PHYSICAL SOC JAPAN, English, Scientific journal
DOI：https://doi.org/10.1143/JPSJ.76,113709
DOI ID：10.1143/JPSJ.76,113709, ISSN：0031-9015, SCOPUS ID：36148946814, Web of Science ID：WOS:000251121900034 - Pressure dependence of the phase separation in deuterated kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br at the Mott boundary
S. Kimura; T. Nishi; T. Takahashi; T. Mizuno; K. Miyagawa; H. Taniguchi; A. Kawamoto; K. Kanoda
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, Volume：310, Number：2, First page：1102, Last page：1104, Mar. 2007
The pressure dependence of the optical reflectivity spectrum [R(omega)] of deuterated kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br(d44) at T = 4.5 K was determined. At the ambient pressure, d44 under fast cooling conditions forms an antiferromagnetic insulator (AFI) phase, as confirmed by the wavenumber of the v(3)(a(g)) vibration mode. At the pressures in the range of several MPa, the optical spectrum changes to that of a metal that matches a non-deuterated material consisting of AFI and PM (paramagnetic metallic) spectra. This indicates that the phase separation between the AFI and PM phases appears at intermediate pressures. The phase size of the separated phase is smaller than the instrumental spatial resolution of 50 mu m, based on the inability of our methods to record it. (c) 2006 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.jmmm.2006.10.695
DOI ID：10.1016/j.jmmm.2006.10.695, ISSN：0304-8853, SCOPUS ID：33847327061, Web of Science ID：WOS:000247618700188 - High-pressure studies of doped-type organic superconductors
T. Okuhata; T. Nagai; H. Taniguchi; K. Satoh; M. Hedo; Y. Uwatoko
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：76, First page：188, Last page：189, Jan. 2007
kappa-(BEDT-TTF)(4)Hg2.89Br8 is an ambient-pressure superconductor with a transition temperature (T-c) value of 4.3 K. This salt can be considered as an electron system that is naturally carrier doped into a Mott insulator by a slight excalation of the Hg ions. In order to obtain information about the nature of the metallic and superconducting states in this doping system, we performed electrical resistivity measurements as functions of temperature and pressure. We revealed that Tc showed an anomalous two-peak structure along the pressure axis. In addition, we found that the power of the temperature in the low-temperature normal-state resistivity correlated with the Tc diagram. We concluded that an observable critical boundary existed between the non-Fermi-liquid and Fermi-liquid states in this system.
PHYSICAL SOC JAPAN, English, Scientific journal
DOI：https://doi.org/10.1143/JPSJS.76SA.188
DOI ID：10.1143/JPSJS.76SA.188, ISSN：0031-9015, SCOPUS ID：70349427354, Web of Science ID：WOS:000209124900074 - High-pressure electronic state of kappa-(BEDT-TTF)(2)Cu[N(CN)(2)] Br probed by Hall effect
K. Katayama; T. Nagai; H. Taniguchi; K. Satoh; N. Tajima; R. Kato
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：76, First page：194, Last page：195, Jan. 2007
We studied the normal-state properties of an organic superconductor, kappa-(BEDT-TTF)(2)Cu[N(CN)(2)] Br, through the investigation of the Hall effect as functions of temperature and pressure. At low pressures, the Hall coefficient shows an apparent increase with lowering temperature and a following peak structure. In this pressure range, the Hall effect possibly correlates with the spin fluctuation. At high pressures, we observed a drastic decrease and sign change in the Hall coefficient. With the dissimilarity with the behavior of similar compounds such as kappa-(BEDT-TTF)(2)Cu(NCS)(2) and kappa-(BEDT-TTF)(2)Cu(N[CN](2))Cl, we concluded that this behavior originates from a superstructure below 200 K.
PHYSICAL SOC JAPAN, English, Scientific journal
DOI：https://doi.org/10.1143/JPSJS.76SA.194
DOI ID：10.1143/JPSJS.76SA.194, ISSN：0031-9015, SCOPUS ID：43349103739, Web of Science ID：WOS:000209124900077 - Magnetic-field-induced superconductor-insulator-metal transition in an organic conductor: An infrared magneto-optical imaging spectroscopic study
Tatsuhiko Nishi; Shin-ichi Kimura; Toshiharu Takahashi; Hojun Im; Yong-Seung Kwon; Takahiro Ito
PHYSICAL REVIEW B, Volume：75, Number：1, Jan. 2007
The magnetic-field-induced superconductor-insulator-metal transition (SIMT) in partially deuterated kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br, which is just on the Mott boundary, has been observed using the infrared magneto-optical imaging spectroscopy. The infrared reflectivity image on the sample surface revealed that the metallic (or superconducting) and insulating phases coexist and they have different magnetic-field dependences. One of the magnetic-field dependence is SIMT that appeared on part of the sample surface. The SIMT was concluded to originate from the balance of the inhomogeneity in the sample itself and the disorder of the ethylene end groups resulting from fast cooling.
AMERICAN PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.75.014525
DOI ID：10.1103/PhysRevB.75.014525, ISSN：1098-0121, SCOPUS ID：33846532645, Web of Science ID：WOS:000243894600132 - High-pressure studies of layered organic superconductors up to 9 GPa: research of pressure effect on exactly and nearly half-filled systems in organics
Hiromi Taniguchi; Takahiro Okuhata; Takuya Nagai; Masashi Miyashita; Kenichi Uchiyama; Kazuhiko Satoh; Nobuo Mori; Masato Hedo; Yoshiya Uwatoko
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：76, First page：168, Last page：171, Jan. 2007, [Reviewed]
We demonstrated high-pressure studies on two kinds of layered organics. One is a Mott insulator, beta'-(BEDT-TTF)(2)ICl2, with an exactly half-filled band. By applying extremely high pressure to it, we observed the highest-T-c superconductivity among organics. T-c amounts to 14.2 K at 8.2 GPa. The other is a doped-type conductor, kappa-(BEDT-TTF)4Hg(2.78)Cl(8), with the band-filling shifted from the half-filled state. We uncovered that it had an anomalous pressuretemperature phase diagram. T-c had a minimum structure within the superconducting phase along with pressure axis. In addition, we found that this superconducting phase was lying in between two nonmetallic phases.
PHYSICAL SOC JAPAN, English, Scientific journal
DOI：https://doi.org/10.1143/JPSJS.76SA.168
DOI ID：10.1143/JPSJS.76SA.168, ISSN：0031-9015, Web of Science ID：WOS:000209124900068 - mu SR study of an antiferromagnetic Mott insulator beta '-(BEDT-TTF)(2)ICl2
K Satoh; H Taniguchi; A Kawamoto; W Higemoto
PHYSICA B-CONDENSED MATTER, Volume：374, First page：99, Last page：101, Mar. 2006
Zero-field mu SR measurements on the antiferromagnetic Mott insulator beta'-(BEDT-TTF)(2)ICl2 were performed in order to study the microscopic magnetic properties of this organics. The volume fraction of the antiferromagnetic phase was found to be temperature independent. Muon precession frequency, which is proportional to the magnitude of the magnetic moment at the dimer of two BEDT-TTF molecules, does not follow the simple model based on the mean-field approximation. (c) 2005 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.physb.2005.11.025
DOI ID：10.1016/j.physb.2005.11.025, ISSN：0921-4526, SCOPUS ID：33644678985, Web of Science ID：WOS:000236388800025 - mu SR study of an antiferromagnetic insulator (BEDT-TTF)(TCNQ)
K Satoh; H Fujita; R Sato; H Taniguchi; W Higemoto
PHYSICA B-CONDENSED MATTER, Volume：374, First page：102, Last page：105, Mar. 2006
Zero-field mu SR measurements for an antiferromagnetic Mott insulator (BEDT-TTF)(TCNQ) were performed for the first time in order to study the microscopic magnetic properties of this organics. Slight increase of the relaxation rate is observed below 20 K owing to the antiferromagnetic ordering of BEDT-TTF dimers, whereas clear muon precession signal is observed below 3 K owing to the antiferromagnetic ordering of TCNQ. Below 3 K, there exist at least two antiferromagnetic domains whose volume fractions changes with temperature. (c) 2005 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.physb.2005.11.026
DOI ID：10.1016/j.physb.2005.11.026, ISSN：0921-4526, SCOPUS ID：33644664654, Web of Science ID：WOS:000236388800026 - Charge ordered state in (BEDT-TTF)(3)Cl-2 center dot 2H(2)O
T. Ogura; A. Kawamoto; K. Kumagai; H. Taniguchi
JOURNAL OF LOW TEMPERATURE PHYSICS, Volume：142, Number：3-4, First page：543, Last page：546, Feb. 2006, [Reviewed]
The quasi-two-dimensional (Q2D) organic conductor (BEDT-TTF)(3)Cl-2 center dot 2H(2)O is metallic at 300 K and it undergoes a metal-insulator transition (MIT) at T similar to 140 K as revealed from magnetic susceptibility and MRelectric conductivity measurements. Using C-13-NMR measurement, we observed a split of the NMR spectrum which corresponds to a charge rich and poor site below the MIT temperature and concluded that the insulator state is in a charge ordered (CO) state, instead of a charge density wave (CD W) formation proposed previously.
SPRINGER/PLENUM PUBLISHERS, English, Scientific journal
DOI：https://doi.org/10.1007/s10909-006-9145-4
DOI ID：10.1007/s10909-006-9145-4, ISSN：0022-2291, Web of Science ID：WOS:000240657500088 - Crystal growth of 50mg-class single crystals of beta '-(BEDT-TTF)(2)ICl2 and crystal evaluation
H. Taniguchi; R. Sato; K. Satoh; A. Kawamoto; H. Okamoto; T. Kobayasi; K. Mizuno
JOURNAL OF LOW TEMPERATURE PHYSICS, Volume：142, Number：3-4, First page：437, Last page：440, Feb. 2006
Single crystals of beta'-(BEDT-TTF)(2)ICl2 were grown electrochemically. In the crystal growth we used a large glass cell of which inner volume was more than 200ml. In addition, the solution was replaced by newly prepared one every two months where total period of synthesis was about one year. As a result we obtained a number of large crystals over 10mg. The weight of the largest crystal is about 50mg. The crystallinity was confirmed by X-ray topograph imaging.
SPRINGER/PLENUM PUBLISHERS, English, Scientific journal
DOI：https://doi.org/10.1007/s10909-006-9132-9
DOI ID：10.1007/s10909-006-9132-9, ISSN：0022-2291, SCOPUS ID：34447635491, Web of Science ID：WOS:000240657500062 - Anomalous sign change in Hall coefficient of kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br under pressure
Kazuhiro Katayama; Takuya Nagai; Hiromi Taniguchi; Kazuhiko Satoh; Naoya Tajima; Reizo Kato
JOURNAL OF LOW TEMPERATURE PHYSICS, Volume：142, Number：3-4, First page：515, Last page：518, Feb. 2006, [Reviewed]
We studied the normal state properties of an organic superconductor, K-(BEDT-TTF)(2)Cu[N(CN)(2)]Br, through the measurement of the Hall effect as functions of temperature and pressure. At low pressure, the Hall coefficient shows the peak structure. From the coincidence of the temperature and its pressure evolution with those of anomalies observed in other physical properties, the peak temperature is considered to be T*. At high pressure, we observed the drastic decrease and sign change of the Hall coefficient. From the incompatibility with the behavior of a similar compound, K-(BEDT-TTF)(2)Cu(NCS)(2), we concluded that this behavior originate from the singularity of the Fermi surface of this salt.
SPRINGER/PLENUM PUBLISHERS, English, Scientific journal
DOI：https://doi.org/10.1007/BF02679558
DOI ID：10.1007/BF02679558, ISSN：0022-2291, Web of Science ID：WOS:000240657500081 - EPR study of the electronic states of beta-(BEDT-TTF)(TCNQ)
Shin'ichi Konno; Shigeo Kazama; Maki Hiraoka; Hirokazu Sakamoto; Kenji Mizoguchi; Hiromi Taniguchi; Toshikazu Nakamura; Kou Furukawa
JOURNAL OF LOW TEMPERATURE PHYSICS, Volume：142, Number：3-4, First page：621, Last page：624, Feb. 2006, [Reviewed]
beta'-(BEDT-TTF)(TCNQ) is a compound of BEDT-TTF (=ET) and TCNQ molecules aligned orthogonally with each other, forming two-dimensional sheets and one-dimensional columns of 114-filled pi band, respectively. It is known that the metal-insulator transition occurs at 330 K at ambient pressure. We have measured the electronic spin susceptibility by means of the EPR-NMR method at 50 MHz, and the angular dependence of g-factor and line width of EPR both at Q (34 GHz) and W (94 GHz) band. We successfully confirmed that the antiferromagnetic transition occurs in ET sheets and TCNQ columns, independently.
SPRINGER/PLENUM PUBLISHERS, English, Scientific journal
DOI：https://doi.org/10.1007/s10909-006-9198-4
DOI ID：10.1007/s10909-006-9198-4, ISSN：0022-2291, Web of Science ID：WOS:000240657500107 - The influence of magnetic fields on resistivity of the pressure induced superconductor, beta '-(ET)(2)ICl2
Mika Kano; Nobuyki Kurita; Masato Hedo; Yoshiya Uwatoko; Masashi Miyashita; Hiromi Taniguchi; Stanley W. Tozer
LOW TEMPERATURE PHYSICS, PTS A AND B, Volume：850, First page：615, Last page：+, 2006
High pressure magnetotransport studies to 8.3 GPa using a diamond anvil cell are reported for the organic Mott-insulator, beta '-(ET)(2)ICl2. Previous research shows that, at a pressure of 8.2 GPa, this material possesses the highest T-C among the organic conductors. A sharp drop observed in p(T) at 8.3GPa which we associate with the superconducting phase is completely suppressed in a magnetic field (H = 18T).
AMER INST PHYSICS, English, International conference proceedings
DOI：https://doi.org/10.1063/1.2354860
DOI ID：10.1063/1.2354860, ISSN：0094-243X, SCOPUS ID：33947536522, Web of Science ID：WOS:000243396400269 - The influence of magnetic fields on resistivity of the pressure induced superconductor, beta '-(ET)(2)ICl2
Mika Kano; Nobuyki Kurita; Masato Hedo; Yoshiya Uwatoko; Masashi Miyashita; Hiromi Taniguchi; Stanley W. Tozer
LOW TEMPERATURE PHYSICS, PTS A AND B, Volume：850, First page：615, Last page：+, 2006, [Reviewed]
High pressure magnetotransport studies to 8.3 GPa using a diamond anvil cell are reported for the organic Mott-insulator, beta '-(ET)(2)ICl2. Previous research shows that, at a pressure of 8.2 GPa, this material possesses the highest T-C among the organic conductors. A sharp drop observed in p(T) at 8.3GPa which we associate with the superconducting phase is completely suppressed in a magnetic field (H = 18T).
AMER INST PHYSICS, English, International conference proceedings
ISSN：0094-243X, Web of Science ID：WOS:000243396400269 - Drastic cooling rate dependence of thermal anomaly associated with the superconducting transition in k-(BEDT-TTF)4Hg2.89Br8
Satoshi Yamashita; Naito Akihito; Nakazawa Yasuhiro; Saito Kazuya; Taniguchi Hiromi; Kazushi Kanoda; Oguni Masaharu
Journal of Thermal Analysis and Calorimetry, Volume：81, Number：3, First page：591, Last page：594, Sep. 2005, [Reviewed]
DOI：https://doi.org/10.1007/s10973-005-0829-9
DOI ID：10.1007/s10973-005-0829-9 - Examination of the charge-sensitive vibrational modes in bis(ethylenedithio)tetrathiafulvalene
Takashi Yamamoto; Mikio Uruichi; Kaoru Yamamoto; Kyuya Yakushi; Atushi Kawamoto; Hiromi Taniguchi
Journal of Physical Chemistry B, Volume：109, Number：32, First page：15226, Last page：15235, Aug. 2005, [Reviewed]
We reinvestigated the two C=C stretching modes of the five-membered rings of ET (ET = bis(ethylenedithio)-tetrathiafulvalene), namely, v2 (in-phase mode) and v27 (out-of-phase mode). The frequency of the v27 mode of ET+ was corrected to be ∼1400 cm -1, which was identified from the polarized infrared reflectance spectra of (ET)(ClO4), (ET)(AuBr2Cl2), and the deuterium- or 13C-substituted compounds of (ET)(AuBr 2Cl2). It was clarified from DFT calculations that the frequency of the v27 mode of the flat ET0 molecule was significantly different from that of the boat-shaped ET0 molecule. We obtained the linear relationship between the frequency and the charge on the molecule, ρ, for the flat ET molecule, which was shown to be v 27(ρ) = 1398 + 140(1 - ρ) cm-1. The frequency shift due to oxidation is remarkably larger than that reported in previous studies. The fractional charges of several ET salts in a charge-ordered state can be successfully estimated by applying this relationship. Therefore, the v27 mode is an efficient probe to detect ρ in the charge-transfer salts of ET. Similarly, a linear relationship for the v2 mode was obtained as v2(p) = 1447 + 120(1 - ρ). This relationship was successfully applied to the charge-poor molecule of θ-type ET salts in the charge-ordered state but could not be applied to the charge-rich molecule. This discrepancy was semiquantitatively explained by the hybridization between the v2 and v3 modes. © 2005 American Chemical Society.
English, Scientific journal
DOI：https://doi.org/10.1021/jp050247o
DOI ID：10.1021/jp050247o, ISSN：1520-6106, CiNii Articles ID：30010847036, SCOPUS ID：24344474080 - Anomalous enhancement of electronic heat capacity in the organic conductors κ-(BEDT-TTF)4Hg3-δX8 (X=Br,Cl)
Akihito Naito; Yasuhiro Nakazawa; Kazuya Saito; Hiromi Taniguchi; Kazushi Kanoda; Michio Sorai
Physical Review B - Condensed Matter and Materials Physics, Volume：71, Number：5, Feb. 2005, [Reviewed]
Peculiar low-temperature electronic properties induced by the filling change from a half-filled band realized in κ-(BEDT-TTF)4Hg 2.89Br8 and κ-(BEDT-TTF)4Hg 2.78Cl8, which belong to the well-known κ-type family of organic conductors, were studied by thermodynamic measurements. We observed unusual behaviors both in the lattice and the electronic heat capacities. The former is associated with the dimensional crossover in the acoustic phonons, which is attributable to the peculiarity of mercury chains in the anion layers. The electronic heat capacity represented by the γ term at low temperatures is enhanced up to 52-55 mJ K-2 mol-1 [for the formula (BEDT-TTF)2Hg1.5-1/2δX4] due to anomalous growth of the antiferromagnetic spin fluctuations in these salts. ©2005 The American Physical Society.
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.71.054514
DOI ID：10.1103/PhysRevB.71.054514, ISSN：1098-0121, SCOPUS ID：15744394419 - Influence of the cooling rate on low-temperature Raman and infrared-reflection spectra of partially deuterated kappa-(BEDT-TTF)(2)Cu(N(CN)(2))Br
A Maksimuk; K Yakushi; H Taniguchi; K Kanoda; A Kawamoto
SYNTHETIC METALS, Volume：149, Number：1, First page：13, Last page：18, Feb. 2005, [Reviewed]
Raman and infrared-reflection spectra of kappa-(BEDT-TTF)(2)Cu(N(CN)(2))Br and its denterated and partially deuterated analogues were measured at temperatures between 5 and 300 K and cooling rates from 1 to 20 K/min. It was found that, in partially deuterated samples, the interdimer electron-molecular vibration splitting of v(3) mode in Raman spectra, and linewidths of some phonon peaks both in Raman and infrared spectra depend on the cooling rate. These observations were explained by disorder-related effects. (C) 2004 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE SA, English, Scientific journal
DOI：https://doi.org/10.1016/j.synthmet.2004.10.006
DOI ID：10.1016/j.synthmet.2004.10.006, ISSN：0379-6779, Web of Science ID：WOS:000227531600002 - Anomalous enhancement of electronic heat capacity in the organic conductors kappa-(BEDT-TTF)(4)Hg3-delta X8 (X=Br,Cl)
Naito A; Nakazawa Y; Saito K; Taniguchi H; Kanoda K; Sorai M
PHYSICAL REVIEW B, Volume：71, Number：5, Feb. 2005, [Reviewed]
DOI：https://doi.org/10.1103/PhysRevB.71.054514
DOI ID：10.1103/PhysRevB.71.054514, ISSN：2469-9950, Web of Science ID：WOS:000228013400079 - Superconductivity induced by extremely high pressure in layered organics, beta '-(BEDT-TTF)(2)ICI2
H Taniguchi; M Miyashita; K Uchiyama; K Satoh; N Mori; H Okamoto; K Miyagawa; K Kanoda; M Hedo; Y Uwatoko
JOURNAL DE PHYSIQUE IV, Volume：114, First page：273, Last page：276, Apr. 2004, [Reviewed]
An organic Mott insulator, beta'-(BEDT-TTF)(2)ICl2, is metallized by application of extremely high pressure up to 9.0GPa. When the metallic state is stabilized, superconductivity with the highest transition-temperature (T-c) among organic systems appears. The maximum T-c that we observed was 14.2K(onset) at 8.2GPa. A magnetic-field effect on this Superconductivity and normal-state properties are discussed in terms of comparison with other organic Superconductors.
E D P SCIENCES, English, Scientific journal
DOI：https://doi.org/10.1051/jp4:2004114057
DOI ID：10.1051/jp4:2004114057, ISSN：1155-4339, Web of Science ID：WOS:000221218200058 - Characterization of transport and magnetic properties of a Mott insulator, beta'-(BEDT-TTF)(2)IBrCI
K Uchiyama; M Miyashita; H Taniguchi; K Satoh; N Mori; K Miyagawa; K Kanoda; M Hedo; Y Uwatoko
JOURNAL DE PHYSIQUE IV, Volume：114, First page：387, Last page：389, Apr. 2004, [Reviewed]
Physical properties of an organic conductor, beta'-(BEDT-TTF)(2)IBrCl, were characterized under ambient and extremely high pressures. Semiconducting behavior with activation energy, E-a=0.11eV, and antiferromagnetic transition with T-N=19.5K were uncovered in the present work. In addition, we have found that this salt showed a sign of superconductivity at 8.0GPa in common with the case of the beta'-(BEDT-TTF)(2)ICl2, which is the highest-T-c superconductor among organics.
E D P SCIENCES, English, Scientific journal
DOI：https://doi.org/10.1051/jp4:2004114093
DOI ID：10.1051/jp4:2004114093, ISSN：1155-4339, Web of Science ID：WOS:000221218200094 - High-pressure study of a Mott insulator (BEDT-TTF) (TCNQ)
M. Miyashita; K. Uchiyama; H. Taniguchi; K. Satoh; Y. Uwatoko; N. Tajima; M. Tamura; R. Kato
JOURNAL DE PHYSIQUE, IV FRANCE, Volume：114, First page：333, Last page：334, Apr. 2004, [Reviewed]
The resistive state of the charge-transfer complex, (BEDT-TTF)(TCNQ), was studied by application of hydrostatic pressure and uniaxial strain. An obtained (hydrostatic) pressure-temperature phase diagram was different from a reported one [1]: in our phase diagram, low-temperature metallic phase exists. The results obtained by application of uniaxial strains were discussed in terms of a role of the dimer of BEDT-TTF in the present salt. © EDP Sciences.
English, International conference proceedings
DOI：https://doi.org/10.1051/jp4:2004114075
Scopus：https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33645235274&origin=inward
Scopus Citedby：https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=33645235274&origin=inward
DOI ID：10.1051/jp4:2004114075, ISSN：1155-4339, eISSN：1764-7177, SCOPUS ID：33645235274 - Development of AC susceptibility technique under high pressure and its application to organic superconductor
A Kurita; M Miyashita; H Taniguchi; K Satoh; M Tamura; R Kato; M Hedo; Y Uwatoko
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Volume：388, First page：603, Last page：604, May 2003, [Reviewed]
We developed an AC susceptometer available under pressure. It was examined at the organic superconductor, kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br, and then we confirmed a satisfactory performance. A future possible application is presented. (C) 2003 Elsevier Science B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/S0921-4534(02)02761-2
DOI ID：10.1016/S0921-4534(02)02761-2, ISSN：0921-4534, eISSN：1873-2143, Web of Science ID：WOS:000183340300293 - Transport properties of theta-ET2CsM(SCN)(4) (M = Zn, Co) under ultra-high pressure
M Miyashita; H Taniguchi; K Satoh; M Hedo; Y Uwatoko; K Miyagawa; K Kanoda
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Volume：388, First page：599, Last page：600, May 2003, [Reviewed]
In order to investigate the electronic state of the organic c.onductors, theta-ET2CsM(SCN)(4) (M = Zn, Co), under ultra-high pressure, we performed the resistivity measurements using the cubic anvil press. The insulating states of these salts were suppressed with increasing pressure but survived at low temperatures even at 7-8 GPa. The results were discussed in terms of anisotropic pressure dependence of the transfer integral. (C) 2003 Elsevier Science B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/S0921-4534(02)02759-4
DOI ID：10.1016/S0921-4534(02)02759-4, ISSN：0921-4534, Web of Science ID：WOS:000183340300291 - Field-induced superconductor-insulator transition in layered organics
H Taniguchi; A Kawamoto; K Kanoda
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Volume：388, First page：597, Last page：598, May 2003, [Reviewed]
A partially deuterated kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br salt, which is a superconductor situated near the Mott insulator, has been investigated by resistivity measurements under magnetic fields. The superconducting transition of this salt is replaced by the first-order metal-insulator transition by magnetic field. This field-induced transition fades away when the sample cooling around 80 K is slowed down. The present findings lead us to bring to mind possible realization of the ideal electric switch controllable with the magnetic field. (C) 2003 Elsevier Science B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/S0921-4534(02)02758-2
DOI ID：10.1016/S0921-4534(02)02758-2, ISSN：0921-4534, Web of Science ID：WOS:000183340300290 - Low-Temperature Heat Capacity Measuremets of k-(BEDT-TTF)4Hg2.89Br8
A.? Naito; Y. Nakazawa; K. Saito; H. Taniguchi; K. Kanoda; M. Soari
Apr. 2003, [Reviewed]
English, Scientific journal
DOI：https://doi.org/10.1016/S0921-4534(02)02757-0
DOI ID：10.1016/S0921-4534(02)02757-0 - Phase control of κ-(BEDT-TTF)
2 Cu[N(CN)2 ]Br by partial deuteration
A. Kawamoto; M. Yamashita; K. Kumagai; H. Taniguchi; Y. Nakazawa; K. Miyagawa; K. Kanoda
Synthetic Metals, Volume：133-134, First page：123, Last page：124, Mar. 2003
κ-(BEDT-TTF)2X system is well known as the strong correlated electron system with the phase boundary of the superconducting and the antiferromagnetic ordering phases. We controlled the boundary with the partial deuterization technique on κ-(BEDT-TTF)2Cu[N(CN)2]Br and found the boundary was sensitive to cooling rate around at 80 K, at which the lattice anomaly occurred. We also found the external magnetic field dependence of the boundary. © 2002 Elsevier Science B.V. All rights reserved.
DOI：https://doi.org/10.1016/S0379-6779(02)00326-0
DOI ID：10.1016/S0379-6779(02)00326-0, ISSN：0379-6779, SCOPUS ID：0037435229 - Superconductivity at 14.2 K in layered organics under extreme pressure
H Taniguchi; M Miyashita; K Uchiyama; K Satoh; N Mori; H Okamoto; K Miyagawa; K Kanoda; M Hedo; Y Uwatoko
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：72, Number：3, First page：468, Last page：471, Mar. 2003, [Reviewed]
We demonstrate that an organic Mott insulator, beta'-(BEDT-TTF)(2)ICl2, is metallized by application of extremely high pressure by means of the cubic anvil press. When the metallic state is stabilized, superconductivity with the highest transition-temperature (T-3) among the organic systems appears. The lower limit of the pressure at which the superconducting transition manifests itself is approximately 7.0 GPa and T-c reaches a maximum value, 14.2 K (onset), at 8.2 GPa. The pressure-temperature phase diagram is constructed and discussed in terms of the comparison with those of other organic systems,
PHYSICAL SOC JAPAN, English, Scientific journal
DOI：https://doi.org/10.1143/JPSJ.72.468
DOI ID：10.1143/JPSJ.72.468, ISSN：0031-9015, Web of Science ID：WOS:000181678000003 - Field switching of superconductor-insulator bistability in artificially tuned organics
Taniguchi H; Kanoda K; Kawamoto A
PHYSICAL REVIEW B, Volume：67, Number：1, Jan. 2003, [Reviewed]
DOI：https://doi.org/10.1103/PhysRevB.67.014510
DOI ID：10.1103/PhysRevB.67.014510, ISSN：1098-0121, Web of Science ID：WOS:000180830400080 - d orbital doping into pi charge-ordered molecular insulator
Itou T; Hiraki K; Taniguchi H; Kanoda K; Takahashi T
PHYSICAL REVIEW LETTERS, Volume：89, Number：24, Dec. 2002, [Reviewed]
DOI：https://doi.org/10.1103/PhysRevLett.89.246402
DOI ID：10.1103/PhysRevLett.89.246402, ISSN：0031-9007, Web of Science ID：WOS:000179484700035 - The C=C stretching vibrations of kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br and its isotope analogues
M Maksimuk; K Yakushi; H Taniguchi; K Kanoda; A Kawamoto
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：70, Number：12, First page：3728, Last page：3738, Dec. 2001, [Reviewed]
The C=C stretching modes in resonance Raman spectra and infrared reflectivity were measured at temperatures between 15 K and 300 K using various polarizations in kappa-(BEDT TTF)(2)Cu[N(CN)(2)]Br, its fully and partially deuterated analogues, and C-13-substituted analogue. The infrared- and Raman-active bands were re-assigned based on the factor group analysis. We found a Raman-active EMV-coupled nu (3) mode near 1420 cm(-1), which shows a large downshift and broadening through the inter-dimer EMV interaction. The mixing of the bridge and ring C=C stretching vibrations depend upon the symmetry of the crystal mode. In contrast to deuterated crystals, the non-deuterated crystals show a splitting in the nu (2), nu (3), and nu (27) bands.
PHYSICAL SOC JAPAN, English, Scientific journal
DOI：https://doi.org/10.1143/JPSJ.70.3728
DOI ID：10.1143/JPSJ.70.3728, ISSN：0031-9015, Web of Science ID：WOS:000172871500045 - Electronic state of (DI-DCNQI)2Ag with Cu doping or under pressure
T. Itou; H. Taniguchi; K. Kanoda; K. Hiraki; T. Takahashi
SYNTHETIC METALS, Volume：120, First page：835, Last page：836, Mar. 2001, [Reviewed]
English
DOI：https://doi.org/10.1016/S0379-6779(00)00629-9
DOI ID：10.1016/S0379-6779(00)00629-9 - Thermodynamic Studies of Electron Correlation Effects on Organic Salts Based on BEDT-TTF and DCNQI Molecules
Y. Nakazawa; H. Taniguchi; A. Kawamoto; K. Miyagawa; K. Hiraki; K. Kanoda
J. Phys. Chem. of Solids, Volume：62, First page：385, Last page：388, 2001, [Reviewed]
English, Scientific journal - Pressure effect on the superconductivity and the charge-density waves in Nb3X4 with X=S, Se, and Te
H Taniguti; M Kuga; H Okamoto; H Kaneko; Y Ishihara
PHYSICA B, Volume：291, Number：1-2, First page：135, Last page：144, Aug. 2000
The pressure effect on the superconductivity and the CDW formation in Nb3X4 has been studied up to 1.1 GPa by a resistive measurement. In both Nb3S4 and Nb3Se4, the superconducting-transition temperature T-C decreases with increasing pressure. Pressure-induced-lattice stiffening mainly causes the decrease of T-C in these compounds. The T-C of Nb,Te, increases with pressure. The pressure enhancement of T-C is mainly due to the increase of N(0) by the recovery of the density of states N(0) associated with the depression of the CDWs. The magnitude of the resistivity anomalies at 90 and 30 K at atmospheric pressure is suppressed under pressure. The CDW-transition temperature T-CDW at 90 K hardly changes with pressure. The T-CDW at 30 K decreases with increasing pressure. The pressure effect on both CDW-transition temperatures is discussed in terms of both lattice stiffening and collapse of the nesting of the Fermi surfaces. (C) 2000 Elsevier Science B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/S0921-4526(99)01240-5
DOI ID：10.1016/S0921-4526(99)01240-5, ISSN：0921-4526, CiNii Articles ID：80012234846, Web of Science ID：WOS:000088686000021 - Phase control of strongly correlated organic conductor
H Taniguchi; A Kawamoto; K Kanoda
PHYSICA B, Volume：284, First page：519, Last page：520, Jul. 2000, [Reviewed]
The kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br salts were synthesized from nondeuterated, partially, and fully deuterated BEDT-TTF molecules. The electrical resistance of these salts was examined systematically as functions of temperature and cooling rate, and found to change from metallic to insulating behaviors by the progressive deuterations and increasing the cooling rate. This means the active control of. the correlation effect of electrons in this family. (C) 2000 Elsevier Science B.V. All rights reserved.
ELSEVIER SCIENCE BV, English, Scientific journal
DOI：https://doi.org/10.1016/S0921-4526(99)02120-1
DOI ID：10.1016/S0921-4526(99)02120-1, ISSN：0921-4526, Web of Science ID：WOS:000087311700259 - Electronic specific heat at the boundary region of the metal-insulator transition in the two-dimensional electronic system of kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br
Nakazawa Y; Taniguchi H; Kawamoto A; Kanoda K
PHYSICAL REVIEW B, Volume：61, Number：24, First page：R16295, Last page：R16298, Jun. 2000, [Reviewed]
DOI：https://doi.org/10.1103/PhysRevB.61.R16295
DOI ID：10.1103/PhysRevB.61.R16295, ISSN：2469-9950, Web of Science ID：WOS:000088008400004 - Electronic specific heat of BEDT-TTF-based organic conductors
Nakazawa Y; Taniguchi H; Kawamoto A; Kanoda K
PHYSICA B, Volume：281, First page：899, Last page：900, Jun. 2000, [Reviewed]
DOI：https://doi.org/10.1016/S0921-4526(99)00908-4
DOI ID：10.1016/S0921-4526(99)00908-4, ISSN：0921-4526, Web of Science ID：WOS:000086570200374 - Electronic specific heat at the boundary region of the metal-insulator transition in the two-dimensional electronic system
Y. Nakazawa; H. Taniguchi; A. Kawamoto; K. Kanoda
Physical Review B - Condensed Matter and Materials Physics, Volume：61, Number：24, First page：R16295, Last page：R16298, 2000, [Reviewed]
The electronic specific heat of partially deuterated organic conductors (Formula presented) [where BEDT-TTF denotes bis(ethylenedithio)tetrathiafulvalene], which are situated around the critical boundary of a metal-insulator transition in two dimensions, are studied. It was found that when the system has access to the (Formula presented) boundary with the progressive deuteration of BEDT-TTF molecules, the normal-state γ term diminishes. The absence of mass enhancement is marked as a basis for the future study of electronic features related to the nature of superconductivity and also on the universality and variation of a possible Mott transition in two-dimensional systems. © 2000 The American Physical Society.
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.61.R16295
DOI ID：10.1103/PhysRevB.61.R16295, ISSN：1550-235X, SCOPUS ID：0000069335 - Metal-insulator transition in partially deuterated kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br
Taniguchi H; Kawamoto A; Nakazawa Y; Kanoda K
SYNTHETIC METALS, Volume：103, Number：1-3, First page：2250, Jun. 1999, [Reviewed]
DOI：https://doi.org/10.1016/S0379-6779(98)00900-X
DOI ID：10.1016/S0379-6779(98)00900-X, ISSN：0379-6779, Web of Science ID：WOS:000081101500226 - Magnetization and ac susceptibility in the vortex state of kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br
H Taniguchi; K Kanoda
SYNTHETIC METALS, Volume：103, Number：1-3, First page：1967, Last page：1968, Jun. 1999
The vortex: state in kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br is studied by transport and magnetization measurements. The so-called second peak which is considered as a manifestation of dimensional crossover in the vortex system, appeared in the M-H curve. The overall phase diagram obtained in the present study was similar to the reported phase: diagram of kappa-(BEDT-TTF)(2)Cu(NCS)(2). In addition, an anomalous cooling rate dependence of M-H curve was observed.
ELSEVIER SCIENCE SA, English, Scientific journal
DOI：https://doi.org/10.1016/S0379-6779(98)00896-0
DOI ID：10.1016/S0379-6779(98)00896-0, ISSN：0379-6779, Web of Science ID：WOS:000081101500086 - Superconductor-insulator phase transformation of partially deuterated kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br by control of the cooling rate
Taniguchi H; Kawamoto A; Kanoda K
PHYSICAL REVIEW B, Volume：59, Number：13, First page：8424, Last page：8427, Apr. 1999, [Reviewed]
DOI：https://doi.org/10.1103/PhysRevB.59.8424
DOI ID：10.1103/PhysRevB.59.8424, ISSN：1098-0121, Web of Science ID：WOS:000079754100022 - Superconductor-insulator phase transformation of partially deuterated kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br by control of the cooling rate
H. Taniguchi; A. Kawamoto; K. Kanoda
Physical Review B, Volume：59, Number：13, First page：8424, Last page：8427, 1999
DOI：https://doi.org/10.1103/PhysRevB.59.8424
DOI ID：10.1103/PhysRevB.59.8424, ISSN：0163-1829, CiNii Articles ID：80011038488 - Superconductor-insulator transition controlled by partial deuteration in BEDT-TTF salt
A Kawamoto; H Taniguchi; K Kanoda
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Volume：120, Number：42, First page：10984, Last page：10985, Oct. 1998, [Reviewed]
AMER CHEMICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1021/ja9827292
DOI ID：10.1021/ja9827292, ISSN：0002-7863, Web of Science ID：WOS:000076693100027 - Phase diagram of vortices in the quasi-two-dimensional organic superconductor alpha-(BEDT-TTF)(2)NH4Hg(SCN)(4): A system of pancake vortices with out-of-plane coupling dominated by the electromagnetic energy
H Taniguchi; Y Nakazawa; K Kanoda
PHYSICAL REVIEW B, Volume：57, Number：6, First page：3623, Last page：3634, Feb. 1998, [Reviewed]
Anisotropy and field-temperature (H-T) phase diagram of the quasi-two-dimensional superconductor, alpha-(BEDT-TTF)(2)NH4Hg(SCN)(4), were investigated through the specific heat, ac complex susceptibility chi=chi'-i chi ", and resistivity measurements under zero field and de fields normal to the conducting plane. The anisotropy parameter gamma was determined to be as large as similar to 10(3). In the vortex state of this highly anisotropic superconductor, it was found that the onset of the in-plane and out-of-plane ac susceptibility forms a characteristic line well below the H-c2 line determined by the specific-heat measurements. The absence of the frequency dependence in the out-of-plane susceptibility suggests that this is a melting line of vortices, rather than a crossover of vortex dynamics. The out-of-plane resistivity measurements show that the interlayer coherence between pancake vortices is established well above the melting line. Considering the anisotropy parameter obtained in the present study, the pancake vortices in this superconductor is viewed as an assembly coupled mainly through the electromagnetic energy in the out-of-plane direction. According to this feature, the two characteristic lines in the H-T diagram were qualitatively explained by the recent melting and decoupling theories taking account of the electromagnetic coupling.
AMER PHYSICAL SOC, English, Scientific journal
ISSN：1098-0121, eISSN：1550-235X, Web of Science ID：WOS:000072116400062 - Phase diagram of vortices in the quasi-two-dimensional organic superconductor alpha-(BEDT-TTF)(2)NH4Hg(SCN)(4): A system of pancake vortices with out-of-plane coupling dominated by the electromagnetic energy
H. Taniguchi; Y. Nakazawa; K. Kanoda
Physical Review B, Volume：57, Number：6, First page：3623, Last page：3634, 1998
DOI：https://doi.org/10.1103/PhysRevB.57.3623
DOI ID：10.1103/PhysRevB.57.3623, ISSN：0163-1829, CiNii Articles ID：80010148570 - C-13-NMR study of Mott insulating phase in kappa-(BEDT-TTF)(2)X family
Kawamoto A; Miyagawa K; Taniguchi H; Kanoda K
SYNTHETIC METALS, Volume：85, Number：1-3, First page：1547, Last page：1548, Feb. 1997, [Reviewed]
DOI：https://doi.org/10.1016/S0379-6779(97)80342-6
DOI ID：10.1016/S0379-6779(97)80342-6, ISSN：0379-6779, Web of Science ID：WOS:A1997WX70800217 - Melting and Interlayer Coherence of Vortices in the Quasi-Two-Dimensiona Organic Superconductor, -(BEDT-TTF)2NH4Hg(SCN)4
H. Taniguchi; Y. Nakazawa; K. Kanoda
Physica C, Volume：282-287, First page：2013, Last page：2014, 1997, [Reviewed]
English, Scientific journal - Vortex State in the Highly Anisotropic Superconductor, -(BEDT-TTF)2NH4Hg(SCN)4
H. Taniguchi; Y. Nakazawa; K. Kanoda
Synthetic Metals, Volume：85, First page：1553, Last page：1554, 1997, [Reviewed]
English, Scientific journal - Highly anisotrspic superconductivity in the organic conductor alpha-(BEDT-TTF)(2)NH4Hg(SCN)(4)
H Taniguchi; H Sato; Y Nakazawa; K Kanoda
PHYSICAL REVIEW B, Volume：53, Number：14, First page：R8879, Last page：R8882, Apr. 1996, [Reviewed]
Superconductivity in a layered organic compound, alpha-(BEDT-TTF)(2)NH4Hg(SCN)(4), has been characterized by measurements of the in-plane and out-of-plane resistivities and susceptibilities. The anisotropy of the normal state resistivity amounts to 10(5)-10(6). The profiles of the in-plane and out-of-plane superconducting transitions are qualitatively different in both resistive and inductive measurements. The out-of-plane penetration depth is as long as 1.4 mm. All these results indicate that this material is a model system of Josephson-coupled two-dimensional layers with a high superconductive anisotropy,
AMER PHYSICAL SOC, English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.53.R8879
DOI ID：10.1103/PhysRevB.53.R8879, ISSN：2469-9950, eISSN：2469-9969, Web of Science ID：WOS:A1996UF06400019 - Highly anisotropic superconductivity in the organic conductorH
H. Taniguchi; H. Sato; Y. Nakazawa; K. Kanoda
Physical Review B - Condensed Matter and Materials Physics, Volume：53, Number：14, First page：R8879, Last page：R8882, 1996, [Reviewed]
Superconductivity in a layered organic compound, (Formula presented)-(Formula presented)N(Formula presented)Hg(Formula presented), has been characterized by measurements of the in-plane and out-of-plane resistivities and susceptibilities. The anisotropy of the normal state resistivity amounts to (Formula presented)-(Formula presented). The profiles of the in-plane and out-of-plane superconducting transitions are qualitatively different in both resistive and inductive measurements. The out-of-plane penetration depth is as long as 1.4 mm. All these results indicate that this material is a model system of Josephson-coupled two-dimensional layers with a high superconductive anisotropy., © 1996 The American Physical Society.
English, Scientific journal
DOI：https://doi.org/10.1103/PhysRevB.53.R8879
DOI ID：10.1103/PhysRevB.53.R8879, ISSN：1550-235X, SCOPUS ID：0001298920 - Highly anisotrspic superconductivity in the organic conductor alpha-(BEDT-TTF)(2)NH4Hg(SCN)(4)
H. Taniguchi; H. Sato; Y. Nakazawa; K. Kanoda
Physical Review B, Volume：53, Number：14, First page：R8879, Last page：R8882, 1996
DOI：https://doi.org/10.1103/PhysRevB.53.R8879
DOI ID：10.1103/PhysRevB.53.R8879, ISSN：0163-1829, CiNii Articles ID：80008920619, PubMed ID：9982475 - RESISTIVE TRANSITION IN AN EXTREMELY 2-DIMENSIONAL SUPERCONDUCTOR, ALPHA-(BEDT-TTF)(2)NH4HG(SCN)(4)
SATO H; TANIGUCHI H; NAKAZAWA Y; KAWAMOTO A; KATO K; KANODA K
SYNTHETIC METALS, Volume：70, Number：1-3, First page：915, Last page：916, Mar. 1995, [Reviewed]
DOI：https://doi.org/10.1016/0379-6779(94)02698-X
DOI ID：10.1016/0379-6779(94)02698-X, ISSN：0379-6779, Web of Science ID：WOS:A1995QQ70100069 - Resistive Transition in an Extremely Two-Dimensional Superconductor, -(BEDT-TTF)2NH4Hg(SCN)4
H. Sato; H. Taniguchi; Y. Nakazawa; A. Kawamoto; K. Kato; K. Kanoda
Synthetic Metals, Volume：70, First page：879, Last page：880, 1995, [Reviewed]
English, Scientific journal
- Study of charge glass in θ-(BEDT-TTF)2CsCo(SCN)4 probed by pump-probe spectroscopy with different probe polarizations
和田侑万; 土屋聡; 谷口弘三; 戸田泰則
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402252895316862 - Observation of anisotropy in charge glass in θ-(BEDT-TTF)2RbZn(SCN)4 by Polarization-resolved ultrafast spectroscopy
和田侑万; 土屋聡; 谷口弘三; 戸田泰則
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502212807328645 - First-Principles Analysis of Phonon Dispersion in the Organic Conductor β’-(ET)2ICl2
圓谷貴夫; 中惇; 河村聖子; 松浦直人; 谷口弘三; 佐々木孝彦
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502230112885197 - Synthesis and characterization of organic charge-transfer complexes composed of multiple donor molecules
柳原宏紀; 小林拓矢; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502230405738765 - Impurity effects by donor molecular substitution on charge-glass state and charge crystallization in θ-(BEDT-TTF)2RbZn(SCN)4
椎橋裕樹; 八谷司; 小林拓矢; 小林拓矢; 吉見一慶; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502231560371143 - Pressure-induced Lifshitz transition in organic Mott insulator β′-(BEDT-TTF)2ICl2
小林拓矢; 小林拓矢; 吉見一慶; MA H.; MA H.; 関根俊介; 谷口弘三; 松永悟明; 河本充司; 上床美也
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502233625580328 - Magneto thermoelectric effect of ambient-pressure organic Dirac electron system α-(BETS)2I3
西川哲也; 古川哲也; 井口敏; 加藤拓洋; 小林拓矢; 谷口弘三; 佐々木孝彦
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502240376775369 - Sample dependence of the thermopower in the dimer Mott insulator β’-(BEDT-TTF)2ICl2
岡崎竜二; 江口恭平; 伊藤健; 佐藤芳樹; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502242332863817 - 13C NMR measurements on λ-(BEDSe-TTF)2FeCl4 under pressure
齋藤陸丸; 出井智之; 小林拓矢; 小林拓矢; 谷口弘三; 松永悟明; 福岡脩平; 河本充司
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502244482582452 - Determination of charge ordering pattern of organic salt α′-(ET)2IBr2 using XRD
YOON D.; 谷口弘三; 小林拓矢; 小林拓矢; 福岡脩平; 河本充司
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502247230237147 - Verification of 6 K anomaly in κ-[(ET)0.5(BEST)0.5]2Cu2(CN)3
若杉京樹; 谷口弘三; 小林拓矢; 小林拓矢; 福岡脩平; 斎藤陸丸; 小坂辰明; 河本充司
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502262087332478 - Pressure-induced structural phase transition in (DMET-TTF)2AuBr2
加藤大賀; MA Hanming; 吉見一慶; 三澤貴宏; 熊谷誌元; 飯田瑶平; 佐々木義明; 澤田賢志; 郷地順; 小林拓矢; 谷口弘三; 上床美也; 佐藤寛泰; 松永悟明; 河本充司; 野村一成
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502275200934400 - Raman Spectra of κ-(d8-BEST)2Cu2(CN)3
山本貴; 山本貴; 売市幹夫; 小林拓矢; 谷口弘三; 若杉京樹; 齋藤陸丸; 河本充司
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502278059627482 - Observation of charge-glass state and charge crystallization by ESR in θ-(BEDT-TTF)2RbZn(SCN)4: II
八谷司; 小林拓矢; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502283961307738 - Interlayer transverse magnetoresistance in metallic phase in κ-type organic superconductors
三輪大哲; 小林拓矢; 小林拓矢; 谷口弘三; 河本充司; 川椙義高; 田嶋尚也
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502284668667930 - Pressure dependence of magnetic phase transition in λ-(BEDSe-TTF)2GaCl4 observed by muon spin rotation method
齋藤奨太; 齋藤奨太; 髭本亘; 髭本亘; 高久雅輝; 高久雅輝; 佐藤泰海; 伊藤孝; 藤原理賀; 北本力輝; 遊佐卓人; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：79, Number：2, 2024
ISSN：2189-079X, J-Global ID：202502291526150248 - Magnetic properties and heat capacity of high-quality single crystals of deuterated organic superconductor κ-(d8-BEDT-TTF)2Cu(NCS)2
池井龍樹; 前田大樹; 山下智史; 圷広樹; 谷口弘三; 中澤康浩
熱測定討論会講演要旨集(CD-ROM), Volume：60th, 2024
J-Global ID：202502270041441963 - Elucidation of pressure-induced phase transition in organic magnet by using muon spin rotation method under high pressure at J-PARC
齋藤奨太; 高久雅輝; 高久雅輝; 伊藤孝; 藤原理賀; 北本力輝; 遊佐卓人; 小林拓矢; 谷口弘三; 髭本亘; 髭本亘
量子ビームサイエンスフェスタ(Web), Volume：2023, 2024
J-Global ID：202402234961403205 - Analysis of interlayer electron hopping effects in the magnetic structure of κ-type organic antiferromagnets
岩崎龍太; 中惇; 小林拓矢; 谷口弘三; 星野晋太郎
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402245611981366 - Thermoelectricity and thermal conductivity of ambient-pressure organic Dirac electron system α-(BETS)2I3
古川哲也; 西川哲也; 井口敏; 加藤拓洋; 小林拓矢; 谷口弘三; 佐々木孝彦
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402260380598292 - Observation of charge-glass state and charge crystallization by ESR in θ-(BEDT-TTF)2RbZn(SCN)4
八谷司; 樋口圭太; 小林拓矢; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402224267944661 - ESR measurements on κ-(BEST)2Cu2(CN)3
小林拓矢; 小林拓矢; 遊佐卓人; 若杉京樹; 齋藤陸丸; 河本充司; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402241698937273 - ESR study of charge transfer salt β′-(BEST)2CuCl2
関根俊介; 小林拓矢; 小林拓矢; 斎藤陸丸; 若杉京樹; 河本充司; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402250019629246 - Analysis of magnetic susceptibility along the easy axis of magnetization in canted antiferromagnet κ-BEDT-TTF salts
北本力輝; 只野涼; 小林拓矢; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402268535147610 - Time evolution of magnetization of θ-(BEDT-TTF)2 RbZn(SCN)4 in the charge glass phase: II
樋口圭太; 小林拓矢; 小林拓矢; 谷口弘三; 吉見一慶
日本物理学会講演概要集(CD-ROM), Volume：79, Number：1, 2024
ISSN：2189-079X, J-Global ID：202402290054836949 - Thermal transport in an organic Dirac electron system α-(BETS)2I3
古川哲也; 西川哲也; 加藤拓洋; 小林拓矢; 谷口弘三; 佐々木孝彦
東北大学金属材料研究所強磁場超伝導材料研究センター年次報告, Volume：2023, 2024
J-Global ID：202402250238664543 - Creation of σ-Diradical Circularly Delocalized on the Periphery of Naphthalene
田中泰地; 川口倫子; 石村和也; 箕浦真生; 長嶋宏樹; 古川俊輔; 谷口弘三; 斎藤雅一
日本化学会春季年会講演予稿集(Web), Volume：103rd, 2023
J-Global ID：202302268894410434 - Pseudogap near a BCS-BEC crossover regime of strongly correlated organic superconductors
今城周作; 小林拓矢; 松村祐希; 中澤康浩; 谷口弘三; 金道浩一
日本物理学会講演概要集(CD-ROM), Volume：78, Number：1, 2023
ISSN：2189-079X, J-Global ID：202302286980491889 - Electrical resistivity measurements of λ-type organic Mott insulators under high pressure
小林拓矢; 小林拓矢; 安村乃絵瑠; 伊藤有咲; 辺土正人; 郷地順; 上床美也; 斉藤洋平; 河本充司; 森初果; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：78, Number：1, 2023
ISSN：2189-079X, J-Global ID：202302214670469979 - Thermoelectric transport properties of organic molecular conductor β′-(BEDT-TTF)2ICl2
江口恭平; 岡崎竜二; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：78, Number：1, 2023
ISSN：2189-079X, J-Global ID：202302268311570239 - Bandwidth control of λ-type organic conductor by alloying donor molecules
大岩芽衣; 小林拓矢; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：78, Number：1, 2023
ISSN：2189-079X, J-Global ID：202302271731821945 - Creation of a σ-Diradical Based on a Naphthalene Platform
田中泰地; 川口倫子; 石村和也; 箕浦真生; 長嶋宏樹; 古川俊輔; 谷口弘三; 斎藤雅一
基礎有機化学討論会要旨集, Volume：33rd (CD-ROM), 2023
J-Global ID：202302227706490729 - Muon spin rotation experiment on antiferromagnetic state of β’-(BEDT-TTF)2ICl2 under high pressure
高久雅輝; 高久雅輝; 髭本亘; 髭本亘; 佐藤一彦; 齋藤奨太; 伊藤孝; 藤原理賀; 只野涼; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：78, Number：2, 2023
ISSN：2189-079X, J-Global ID：202302231956059272 - Thermoelectric properties of the dimer Mott insulator β′-(BEDT-TTF)2ICl2
江口恭平; 伊藤健; 佐藤芳樹; 岡崎竜二; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：78, Number：2, 2023
ISSN：2189-079X, J-Global ID：202302233916205838 - Thermal conductivity of dimer Mott insulator β’-(BEDT-TTF)2ICl2
西川哲也; 古川哲也; 谷口弘三; 佐々木孝彦
日本物理学会講演概要集(CD-ROM), Volume：78, Number：2, 2023
ISSN：2189-079X, J-Global ID：202302257121838223 - Zero-field μSR of the organic Dirac electron system α-(BETS)2I3
加藤拓洋; 小林拓矢; 小林拓矢; 谷口弘三; 中村惇平; 髭本亘; 髭本亘
日本物理学会講演概要集(CD-ROM), Volume：78, Number：2, 2023
ISSN：2189-079X, J-Global ID：202302214698311256 - Time evolution of magnetization of θ-(BEDT-TTF)2RbZn(SCN)4 in the charge glass phase
樋口圭太; 小林拓矢; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：78, Number：2, 2023
ISSN：2189-079X, J-Global ID：202302220947582350 - Development of low-symmetry organic conductors with one-sided bent asymmetric molecules
山田英寿; 佐藤慧一; 小林拓矢; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：78, Number：2, 2023
ISSN：2189-079X, J-Global ID：202302259033405516 - μSR study on single-component molecular crystal Au(dexbdt)2 with canted antiferromagnetism
只野涼; SARI Dita Puspita; SARI Dita Puspita; 小林拓矢; 小林拓矢; 谷口弘三; 横森創; 森初果; 高久雅輝; 高久雅輝; 中村惇平; 髭本亘; 髭本亘
日本物理学会講演概要集(CD-ROM), Volume：78, Number：2, 2023
ISSN：2189-079X, J-Global ID：202302277672175993 - Quantitative analysis of κ-type organic antiferromagnets with material-based Kugel-Khomskii model
岩崎龍太; 小林拓矢; 谷口弘三; 星野晋太郎
日本物理学会講演概要集(CD-ROM), Volume：78, Number：2, 2023
ISSN：2189-079X, J-Global ID：202302212167562250 - ナフタレン周縁部に広がるσ対称性軌道に非局在化するジラジカルの創製
田中泰地; 川口倫子; 石村和也; 箕浦真生; 長嶋宏樹; 古川俊輔; 谷口弘三; 斎藤雅一
Volume：50th (Web), 2023
J-Global ID：202402213518635549 - Investigation of π-d interaction on λ-(BEST)2FeCl4
齋藤陸丸; 飯田瑶平; 小林拓矢; 谷口弘三; 松永悟明; 福岡脩平; 河本充司
日本物理学会講演概要集(CD-ROM), Volume：78, Number：1, 2023
ISSN：2189-079X, J-Global ID：202302255280680023 - Analysis of Multiple Raman Peaks Observation in κ-(BEST)2Cu2(CN)3
山本貴; 売市幹夫; 小林拓矢; 谷口弘三; 齋藤陸丸; 河本充司
日本物理学会講演概要集(CD-ROM), Volume：78, Number：2, 2023
ISSN：2189-079X, J-Global ID：202302229156617383 - Thermal transport of magnons in organic antiferromagnets
古川哲也; 谷口弘三; 佐々木孝彦
東北大学金属材料研究所強磁場超伝導材料研究センター年次報告, Volume：2021, 2022
J-Global ID：202202245275785755 - Measurements of thermoelectric effect in the organic conductor κ-(ET)4Hg2.89Br8 under pressure: II
若松浩大; 藤井武則; 鈴木悠司; 宮川和也; 谷口弘三; 鹿野田一司
日本物理学会講演概要集(CD-ROM), Volume：77, Number：1, 2022
ISSN：2189-079X, J-Global ID：202202238838730335 - 127I-NQR study of organic superconductor β-(BEDT-TTF)2I3
伊藤篤史; 加藤優樹; 小林拓矢; 小林拓矢; 谷口弘三; 圓谷貴夫; 藤山茂樹
日本物理学会講演概要集(CD-ROM), Volume：77, Number：1, 2022
ISSN：2189-079X, J-Global ID：202202211242054927 - Magnetic Structure of organic antiferromagnet κ-type ET salt studied by magnetic torque measurement
簗田春希; 小林拓矢; 今城周作; 綱川仁志; 安村乃絵瑠; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：77, Number：1, 2022
ISSN：2189-079X, J-Global ID：202202237375539322 - Magnetic structure of organic antiferromagnet λ-(BEDSe-TTF)2GaCl4 studied by magnetic torque measurement
小林拓矢; 簗田春希; 安村乃絵瑠; 谷口弘三; 今城周作; 松尾晶; 金道浩一
日本物理学会講演概要集(CD-ROM), Volume：77, Number：1, 2022
ISSN：2189-079X, J-Global ID：202202228249436271 - Relaxor-like behavior in the λ-type organic conductors
福岡脩平; 齋藤陸丸; 井原慶彦; 河本充司; 小林拓矢; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：77, Number：2, 2022
ISSN：2189-079X, J-Global ID：202302236904541655 - Thermal conductivity of a layered antiferromagnetic Mott insulator κ-(ET)2Cu[N(CN)2]Cl
古川哲也; 谷口弘三; 佐々木孝彦
日本物理学会講演概要集(CD-ROM), Volume：77, Number：2, 2022
ISSN：2189-079X, J-Global ID：202302218525495498 - Basic Physical Properties of Organic Conductor κ-(BETS)2CF3SO3
高橋賢信; 小林拓矢; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：77, Number：2, 2022
ISSN：2189-079X, J-Global ID：202302247339618104 - Studies on U/W dependence of superconducting fluctuations in κ-ET organic superconductors by magnetization measurements
山田瑛己; 三輪大哲; 小林拓矢; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：77, Number：2, 2022
ISSN：2189-079X, J-Global ID：202302280278078572 - 有機伝導体β-(BEDT-TTF)2I3における光誘起金属-絶縁体相分離の探索
永田憲正; 土屋聡; 谷口弘三; 戸田泰則
Volume：57th-18th (CD-ROM), 2022
J-Global ID：202402250212377563 - Development of organic conductors based on asymmetrical TTF derivatives with propylene group
佐藤慧一; 只野涼; 山田英寿; 小林拓矢; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：77, Number：2, 2022
ISSN：2189-079X, J-Global ID：202302228722809872 - Growth of large single crystals of TTF-TCNQ by the cooling method and their evaluation by monochromatic X-ray topography
佐藤慧一; 小林拓矢; 谷口弘三; 岡本博之; 水野薫
日本物理学会講演概要集(CD-ROM), Volume：77, Number：1, 2022
ISSN：2189-079X, J-Global ID：202202214257356446 - Examination on the cooling rate dependence of the antiferromagnetic phase in κ-(d8-BEDT-TTF)2Cu[N(CN)2]Br by zero-field μSR
只野涼; 石川瑠偉; 小林拓矢; 谷口弘三; 石井康之; 渡邊功雄
日本物理学会講演概要集(CD-ROM), Volume：77, Number：1, 2022
ISSN：2189-079X, J-Global ID：202202251849263395 - Pressure-induced anomalous electronic phases of λ-(BEDSe-TTF)2GaCl4 measured by 69,71Ga NMR
安村乃絵瑠; 小林拓矢; 谷口弘三; 福岡脩平; 河本充司
日本物理学会講演概要集(CD-ROM), Volume：77, Number：1, 2022
ISSN：2189-079X, J-Global ID：202202263773265792 - Discovery of 10 K Class Pressure-Induced Superconductivity in a New Organic Charge-Transfer Complex (BEST)2CuCl2
菅原佳哉; 天川智之; 小林拓矢; 谷口弘三; 佐藤一彦; 郷地順; 上床美也
日本物理学会講演概要集(CD-ROM), Volume：76, Number：1, 2021
ISSN：2189-079X, J-Global ID：202102230416229819 - Physical Properties and Electrical Resistance Under Pressures of A New Charge-Transfer Complex κ-(BEST)2Cu2(CN)3
櫻井健人; 小林拓矢; 谷口弘三; 佐藤一彦; 道村真司; 道村真司; 小坂昌史
日本物理学会講演概要集(CD-ROM), Volume：76, Number：1, 2021
ISSN：2189-079X, J-Global ID：202102260220645878 - Low dimensional magnetism of ytterbium insulator YbAgS2
飯塚亮介; 道村真司; 道村真司; 青木優樹; 佐藤一彦; 小林拓矢; 谷口弘三; 髭本亘; 石崎嵩人; 山本隆文; 大山研司; 赤木暢; 大久保晋; 太田仁; 小坂昌史
日本物理学会講演概要集(CD-ROM), Volume：76, Number：1, 2021
ISSN：2189-079X, J-Global ID：202102243529940608 - Study on antiferromagnetic phase of κ-ET salt by alloy samples
生沼浩介; 綱川仁志; 鈴木航平; 道村真司; 道村真司; 小林拓矢; 谷口弘三; 佐藤一彦; 石井康之; 岡本博之; 伊藤哲明
日本物理学会講演概要集(CD-ROM), Volume：76, Number：1, 2021
ISSN：2189-079X, J-Global ID：202102274327285685 - Observation of antiferromagnetic ordering in organic charge-transfer salt λ-(BEST)2GaCl4 using microscopic measurements
小林拓矢; 伊藤有咲; SARI Dita Puspita; SARI Dita Puspita; 渡邊功雄; 斉藤洋平; 河本充司; 佐藤一彦; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：76, Number：1, 2021
ISSN：2189-079X, J-Global ID：202102281473029070 - Microscopic Investigation of Zero-field Spin Structure in κ-type ET Salts by 63Cu-NQR
山崎大誠; 小林拓矢; 加藤優樹; 綱川仁志; 佐藤一彦; 谷口弘三; 河本充司
日本物理学会講演概要集(CD-ROM), Volume：76, Number：2, 2021
ISSN：2189-079X, J-Global ID：202202218266968710 - Analysis of the superconducting phase of κ-(d81-xh8x-ET)2Cu[N(CN)2]Br by ac magnetic susceptibility measurement
高橋啓太; 小澤宏彬; 小林拓矢; 谷口弘三
日本物理学会講演概要集(CD-ROM), Volume：76, Number：2, 2021
ISSN：2189-079X, J-Global ID：202202268270404490 - Temperature dependence of photoinduced carrier dynamics in organic superconductor β-(BEDT-TTF)2I3
永田憲正; 土屋聡; 谷口弘三; 戸田泰則
日本物理学会講演概要集(CD-ROM), Volume：76, Number：1, 2021
ISSN：2189-079X, J-Global ID：202102212491353232 - The Suppression of magnetic ordering in x-ray-irradiated κ-(ET)2Cu[N(CN)2]Cl observed by 1H NMR: IV
浦井瑞紀; 宮川和也; 谷口弘三; 佐々木孝彦; 鹿野田一司
日本物理学会講演概要集(CD-ROM), Volume：75, Number：1, 2020
ISSN：2189-079X, J-Global ID：202002223433366489 - 63Cu-NQR Study of organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br under zero magnetic field
小澤宏彬; 小林拓矢; 綱川仁志; 生沼浩介; 佐藤一彦; 谷口弘三; 河本充司
日本物理学会講演概要集(CD-ROM), Volume：75, Number：1, 2020
ISSN：2189-079X, J-Global ID：202002215657953402 - Synthesis and physical properties of quasi-two-dimensional triangular-lattice organic conductor κ-(BEST)2Cu2(CN)3
櫻井健人; 綱川仁志; 小林拓矢; 谷口弘三; 佐藤一彦
日本物理学会講演概要集(CD-ROM), Volume：75, Number：1, 2020
ISSN：2189-079X, J-Global ID：202002272322674571 - Extension of antiferromagnetic phase in pressure-temperature phase diagram of λ-type organic conductor using BEDSe-TTF molecular substitution
伊藤有咲; 小林拓矢; 谷口弘三; 佐藤一彦; 綱川仁志; 渡邊功雄; SARI Dita Puspita
日本物理学会講演概要集(CD-ROM), Volume：75, Number：1, 2020
ISSN：2189-079X, J-Global ID：202002285195266071 - Muon spin rotation and relaxation studies on layered organic antiferromagnetic insulators, bis(ethylenediseleno)tetrathiafulvalene (BEDSe-TTF) based salt, β’-(BEDSe-TTF)2ICl2 and β’-(BEDSe-TTF)2IBr2
渋谷淳; 綱川仁志; 大島美由紀; 小松宏彰; 小林拓矢; 谷口弘三; 佐藤一彦; 髭本亘; 髭本亘; 幸田章宏; 幸田章宏
日本物理学会講演概要集(CD-ROM), Volume：75, Number：1, 2020
ISSN：2189-079X, J-Global ID：202002232265001449 - Formation of the Mott insulating state under non-equilibrium conditions in organic molecular crystal studied by three-pulse pump probe spectroscopy
土屋聡; MERTELJ Tomaz; MIHAILOVIC Dragan; 谷口弘三; 山田順一; 戸田泰則
日本物理学会講演概要集(CD-ROM), Volume：75, Number：1, 2020
ISSN：2189-079X, J-Global ID：202002233596420360 - 1H NMRによるX線照射されたκ-(ET)2Cu[N(CN)2]Clの磁気秩序抑制過程の観測 III
浦井瑞紀; 古川哲也; 宮川和也; 谷口弘三; 斉藤みく; 佐々木孝彦; 鹿野田一司
Volume：74, Number：1, 2019
ISSN：2189-079X, J-Global ID：201902245579222712 - κ型ET塩の反強磁性相が示す磁場誘起スピン再配向転移の相図
鈴木航平; 生沼浩介; 綱川仁志; 道村真司; 道村真司; 小林拓矢; 谷口弘三; 佐藤一彦; 石井康之; 岡本博之
Volume：74, Number：2, 2019
ISSN：2189-079X, J-Global ID：202002230152402132 - κ型ET塩の反強磁性相における2つのゼロ磁場磁気構造
生沼浩介; 綱川仁志; 道村真司; 道村真司; 小林拓矢; 谷口弘三; 佐藤一彦; 石井康之; 岡本博之; 伊藤哲明
Volume：74, Number：2, 2019
ISSN：2189-079X, J-Global ID：202002258242478853 - 63Cu-NQRによるκ-(BEDT-TTF)2Cu2(CN)3の研究
小林拓矢; 小林拓矢; 古川裕次; DING Qing-Ping; 河本充司; 佐藤一彦; 谷口弘三
Volume：74, Number：2, 2019
ISSN：2189-079X, J-Global ID：202002276554270056 - 63Cu-NQRによるκ-(ET)2Cu[N(CN)2]Clの磁気構造の研究
綱川仁志; 生沼浩介; 小林拓矢; 谷口弘三; 佐藤一彦; 河本充司
Volume：74, Number：2, 2019
ISSN：2189-079X, J-Global ID：202002285760953418 - Possible Triplet Superconductivity in a Holedoped Organic Superconductor k-(ET)₄Hg[2.89]Br₈ Probed by μSR
Sari Dita Puspita; Ishii Yasuyuki; Taniguchi Hiromi; Watanabe Isao
First page：328, Last page：331, 2019
English
ISSN：2185-7326, CiNii Articles ID：40022329790 - θ-(ET)2M Zn(SCN)4(M=Rb,Cs)における光励起キャリアダイナミクスの温度特性
中川紘一; 土屋聡; 谷口弘三; 戸田泰則
Volume：74, Number：2, 2019
ISSN：2189-079X, J-Global ID：202002288799242049 - κ‐(BEDT‐TTF)2Cu[N(CN)2]Clにおける光誘起キャリアダイナミクスに対する分子秩序化の影響
土屋聡; 中川紘一; 谷口弘三; 戸田泰則
日本物理学会講演概要集(CD-ROM), Volume：73, Number：2, First page：ROMBUNNO.11aPS‐63, 21 Sep. 2018
Japanese
ISSN：2189-079X, J-Global ID：201802226060860974 - 重水素化ドナーを含んだ有機超伝導体κ‐(ET)2Cu[N(CN)2]Brにおける光励起キャリアダイナミクスの温度特性
中川紘一; 土屋聡; 谷口弘三; 戸田泰則
日本物理学会講演概要集(CD-ROM), Volume：73, Number：1, First page：ROMBUNNO.25aB404‐2, 23 Mar. 2018
Japanese
ISSN：2189-079X, J-Global ID：201802225433618316 - 偏光時間分解分光測定を用いたモット臨界近傍の有機超伝導体における超伝導ゆらぎの探索
中川紘一; 土屋聡; 谷口弘三; 戸田泰則
応用物理学会北海道支部/日本光学会北海道支部合同学術講演会講演予稿集, Volume：53rd-14th, First page：43, 06 Jan. 2018
Japanese
J-Global ID：201802236186652183 - 擬二次元有機導体κ-(ET)2X(X=Cu[N(CN)2]Cl,Cu2(CN)3)の温度圧力制御下面内および面間輸送特性
関靖秀; 浦井瑞紀; 谷口弘三; 宮川和也; 鹿野田一司
Volume：73, Number：1, 2018
ISSN：2189-079X, J-Global ID：201802233091695980 - 1H NMRによるX線照射されたκ-(ET)2Cu[N(CN)2]Clの磁気秩序抑制過程の観測 II
浦井瑞紀; 古川哲也; 宮川和也; 谷口弘三; 斉藤みく; 佐々木孝彦; 鹿野田一司
Volume：73, Number：2, 2018
ISSN：2189-079X, J-Global ID：201802237632113454 - κ-(d8-BEDT-TTF)2Cu[N(CN)2]Brの超伝導-反強磁性転移
小澤宏彬; 岡野修樹; 小林拓矢; 道村真司; 谷口弘三; 佐藤一彦
Volume：73, Number：2, 2018
ISSN：2189-079X, J-Global ID：201802232823083844 - κ-(d8-ET)2Cu[N(CN)2]Brのゼロ磁場磁気構造
生沼浩介; 綱川仁志; 道村真司; 道村真司; 小林拓矢; 谷口弘三; 佐藤一彦; 石井康之; 岡本博之
Volume：73, Number：2, 2018
ISSN：2189-079X, J-Global ID：201802275087538176 - Superconductor – antiferromagnetic insulator transition in κ-(d8-ET)2Cu[N(CN)2]Br
Ozawa Hiroaki; Okano Naoki; Kobayashi Takuya; Michimura Shinji; Taniguchi Hiromi; Satoh Kazuhiko
Meeting Abstracts of the Physical Society of Japan, Volume：73, Number：0, First page：1213, Last page：1213, 2018
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.73.2.0_1213
DOI ID：10.11316/jpsgaiyo.73.2.0_1213, CiNii Articles ID：130007734875 - Zero-field μSR on an antiferromagnetic phase of κ-ET2X
Taniguchi Hiromi; Watanabe Isao; Ishikawa Rui; Kobayashi Takuya; Michimura Shinji; Satoh Kazuhiko; Ishii Yasuyuki; Astuti Fahmi; Asih Retno; Angel Julia
Meeting Abstracts of the Physical Society of Japan, Volume：73, Number：0, First page：1342, Last page：1342, 2018
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.73.2.0_1342
DOI ID：10.11316/jpsgaiyo.73.2.0_1342, CiNii Articles ID：130007735092 - X線照射されたκ-(ET)2Cu[N(CN)2]Clの電気抵抗の量子臨界スケーリング解析
浦井瑞紀; 古川哲也; 宮川和也; 伊藤美穂; 谷口弘三; 斉藤みく; 佐々木孝彦; 鹿野田一司
Volume：72, Number：2, 2017
ISSN：2189-079X, J-Global ID：201702254691352774 - X線照射されたκ-(ET)2Cu[N(CN)2]Clの圧力下電子状態
浦井瑞紀; 古川哲也; 宮川和也; 伊藤美穂; 谷口弘三; 斉藤みく; 佐々木孝彦; 鹿野田一司
Volume：71, Number：1, 2016
ISSN：2189-079X, J-Global ID：201602292932240995 - 22aBE-6 Control of electronic states in quasi one-dimensional strongly correlated organic conductors (BPDT-TTF)_2X by physical and chemical pressure
Kobayashi R.; Hashimoto K.; Yoneyama N.; Kumada N.; Takei T.; Taniguchi H.; Uwatoko Y.; Wang B.; Sasaki T.
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1942, Last page：1942, 2016
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.1.0_1942
DOI ID：10.11316/jpsgaiyo.71.1.0_1942, ISSN：2189-079X, CiNii Articles ID：110010057908, CiNii Books ID：AA12721570 - 19aBE-7 ^1H-NMR study of a randomness-driven spin liquid in x-ray-irradiated κ-(ET)_2Cu[N(CN)_2]Cl
Yamamoto R.; Furukawa T.; Itou T.; Miyagawa K.; Saito M.; Ito M.; Taniguchi H.; Sasaki T.; Kanoda K.
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1826, Last page：1826, 2016
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.1.0_1826
DOI ID：10.11316/jpsgaiyo.71.1.0_1826, ISSN：2189-079X, CiNii Articles ID：110010057798, CiNii Books ID：AA12721570 - 21aBC-6 A study of electronic states in the organic conductor κ-(ET)_4Hg_<2.89>Br_8 under Pressure
Suzuki Y.; Miyagawa K.; Taniguchi H.; Kanoda K.
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1896, Last page：1896, 2016
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.1.0_1896
DOI ID：10.11316/jpsgaiyo.71.1.0_1896, ISSN：2189-079X, CiNii Articles ID：110010057866, CiNii Books ID：AA12721570 - 21aBC-3 The electron state of X-ray irradiated κ-(ET)_2Cu[N(CN)_2]Cl under pressure
Urai M.; Furukawa T.; Miyagawa K.; Ito M.; Taniguchi H.; Saito M.; Sasaki T.; Kanoda K.
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1893, Last page：1893, 2016
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.1.0_1893
DOI ID：10.11316/jpsgaiyo.71.1.0_1893, ISSN：2189-079X, CiNii Articles ID：110010057863, CiNii Books ID：AA12721570 - Development of high pressure cell for muon spin rotation and relaxation method at J-PARC/MUSE
Satoh K.; Maruchi T.; Taniguchi H.; Ito T. U.; Higemoto W.
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：2613, Last page：2613, 2016高圧実験はいまや物性研究のために欠かせない手法となっている。しかしミュオンスピン回転緩和法の高圧下での測定はそれほど例が多くはない。今回我々は大強度陽子加速器施設ミュオン実験施設(J-PARC/MUSE)にて有機物質を測定することを念頭に置いた圧力容器を開発したのでその詳細と測定例について報告する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.2.0_2613
DOI ID：10.11316/jpsgaiyo.71.2.0_2613, CiNii Articles ID：130006245343 - Studies on magnetic properties of layered organic antiferromagnet κ-(d8-BEDT-TTF)2Cu[N(CN)2]Cl.
Tsuchiya T.; Taniguchi H.; Satoh K.
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1602, Last page：1602, 2016層状有機反強磁性体!LaTeX$\kappa$-(d8-BEDT-TTF)2Cu[N(CN)2]Clの弱強磁性転移を磁化測定により調査し、ゼロ磁場転移温度と臨界指数について議論する。また、この結果を!LaTeX$\kappa$-(h8-BEDT-TTF)2Cu[N(CN)2]Clで得られた結果と比較し議論する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.2.0_1602
DOI ID：10.11316/jpsgaiyo.71.2.0_1602, CiNii Articles ID：130006244319 - High pressure study of the electronic states in the quasi one-dimensional charge ordered organic conductors (BPDT-TTF)2X
Kobayashi R.; Hashimoto K.; Yoneyama N.; Taniguchi H.; Wang B.; Uwatoko Y.; Sasaki T.
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1622, Last page：1622, 2016擬一次元強相関電子系有機導体{\delta}'_C_(BPDT-TTF)_2_X(X=ICl_2_, AuCl_2_, CuCl_2_)は室温近傍で既に電荷秩序を形成している。本研究では静水圧印加によって分子軌道の重なりを増大させることにより、強い電子相関による絶縁体状態から金属状態への相転移を観測した．講演ではスピンパイエルス転移に対する圧力効果や，系の次元性クロスオーバーに関しても議論する．
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.2.0_1622
DOI ID：10.11316/jpsgaiyo.71.2.0_1622, CiNii Articles ID：130006244336 - Studies on phase separation and superconducting transition in the organic material situated in the vicinity of Mott transition
Okano N.; Kuriki Y.; Taniguchi H.; Satoh K.
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1603, Last page：1603, 2016κ型の相図においてMott転移近傍に位置する反強磁性体κ-(d8-BEDT-TTF)2[N(CN)2]Brの磁化を低温領域で測定した。その結果、ヒステリシスを伴う超伝導転移が観測された。これは、反強磁性相から相分離した超伝導相への転移であると考えられる。当日は、この現象の磁場依存性や冷却速度依存性についても議論する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.2.0_1603
DOI ID：10.11316/jpsgaiyo.71.2.0_1603, CiNii Articles ID：130006244320 - Studies on spin-flop magnetic field of Layered Organic Antiferromagnets in BEDT-TTF salts
Ishikawa Rui; Taniguchi Hiromi; Satoh Kazuhiko
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1605, Last page：1605, 2016層状有機反強磁性体!LaTeX$\beta$'-(BEDT-TTF)2ICl2のスピンフロップ磁場の温度依存性を磁化測定により決定し、異方性エネルギー及びダイマーあたりの磁気モーメントの大きさを見積もる。また、!LaTeX$\kappa$型の層状有機反強磁性体についても同様に議論する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.2.0_1605
DOI ID：10.11316/jpsgaiyo.71.2.0_1605, CiNii Articles ID：130006244318 - Studies on antiferromagnetic phases of κ-BEDT-TTF salts by muon spin rotation method I
Taniguchi H.; Ito M.; Uehara T.; Satoh K.; Ishi Y.; Watanabe I.
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1707, Last page：1707, 2016層状反強磁性体κ-(BEDT-TTF)2Cu[N(CN)2]Clとκ-(d8-BEDT-TTF)2Cu[N(CN)2]Brの反強磁性転移をミュウオンスピン回転法により調査し、ゼロ磁場転移温度、ミュウオンサイト、常磁性相緩和について議論する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.2.0_1707
DOI ID：10.11316/jpsgaiyo.71.2.0_1707, CiNii Articles ID：130006244440 - μSR Studies on Hydride and Deuteride Organic Antiferromagnet, β'-(BEDT-TTF)2ICl2
Angel Julia; Taniguchi Hiromi; Astuti Fahmi; Sari Dita Puspita; Watanabe Isao
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1626, Last page：1626, 2016We are going to report the results of $\mu$SR studies on hydride and deuteride organic antiferromagnet, $\beta$'-(BEDT-TTF)_2_ICl_2_. We will discuss $\mu$SR time spectra in the paramagnetic state, magnetic transition temperatures and critical exponents.
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.2.0_1626
DOI ID：10.11316/jpsgaiyo.71.2.0_1626, CiNii Articles ID：130006244251 - In-plane and out-of-plane charge transport of the quasi-two-dimensional organic conductors, κ-(ET)2X (X=Cu[N(CN)2]Cl and Cu2(CN)3)
Seki Y.; Urai M.; Taniguchi H.; Miyagawa K.; Kanoda K.
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1567, Last page：1567, 2016近年、スピン液体物質!LaTeX${\kappa}$-(ET)_2_Cu_2_(CN)_3_における電子状態が議論されているが、正確な描像はいまだ確立されていない。一方、同じ物質群!LaTeX${\kappa}$-(ET)_2_Xに属する!LaTeX${\kappa}$-(ET)_2_ Cu[N(CN)_2_]Clはフラストレーションの違いから、絶縁相基底状態は反強磁性秩序を示している。本発表では両物質に対して、同一サンプルに対する面内および面間電気抵抗測定を行った結果を報告し、フラストレーションの違いの面間伝導に与える影響について議論する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.2.0_1567
DOI ID：10.11316/jpsgaiyo.71.2.0_1567, CiNii Articles ID：130006244231 - Nernst effect in the organic superconductor, κ-(ET)4Hg2.89Br8
Suzuki Yuji; Fujii Takenori; Miyagawa Kazuya; Taniguchi Hiromi; Kanoda Kazushi
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1676, Last page：1676, 2016擬二次元系三角格子有機伝導体!LaTeX$\kappa$-(ET)_4_Hg_2.89_Br_8_はモット絶縁体に11%ホールドープした系とみなせる。この物質は圧力下で超伝導を示すが、その転移温度は圧力に対して0.5GPa付近で最大となるドーム構造を持つことが特徴である。また、0.5GPaよりも低圧側では高圧側に比べて超伝導の上部臨界磁場が非常に大きいことがわかっている。本講演では圧力下でこの物質の電子相関を制御して行ったネルンスト効果の測定から、超伝導ゆらぎをはじめとした超伝導の諸性質を議論する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.2.0_1676
DOI ID：10.11316/jpsgaiyo.71.2.0_1676, CiNii Articles ID：130006244279 - Transport noise measurements in dimer-Mott insulator β'-(BEDT-TTF)2ICl2 III
Iguchi S.; Kurosu M.; Hartmann B.; Muller J.; Taniguchi H.; Sasaki T.
Meeting Abstracts of the Physical Society of Japan, Volume：71, First page：1583, Last page：1583, 2016我々は、β'-(BEDT-TTF)2ICl2における電荷の低速ダイナミクスを明らかにするため、1/f特性を示す抵抗ノイズの測定を行ってきた。前回までに抵抗ノイズ強度の温度依存性、電流依存性等を測定し、110-140Kの範囲にBEDT-TTF分子端のエチレン基に由来すると考えられるローレンツ型の周波数スペクトルが現れることなどを報告した。今回はこのローレンツ型スペクトルの強度や電流依存等の詳細について報告し電子の低速ダイナミクスを議論する。
The Physical Society of Japan, Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.71.2.0_1583
DOI ID：10.11316/jpsgaiyo.71.2.0_1583, CiNii Articles ID：130006244256 - 有機分子性結晶の磁場中誘電特性
井口敏; 米山直樹; 谷口弘三; 佐々木孝彦
Volume：2014, 2015
J-Global ID：201502210747565125 - X線照射されたκ-(ET)2Cu[N(CN)2]Clの1H NMR
浦井瑞紀; 古川哲也; 宮川和也; 伊藤美穂; 谷口弘三; 斉藤みく; 佐々木孝彦; 鹿野田一司
Volume：70, Number：2, 2015
ISSN：2189-079X, J-Global ID：201602210294222890 - 17pAF-11 In-plane and out-of-plane transport measurements of the quasi-two-dimensional doped triangular-lattice organic conductor κ-(ET)_4Hg_<2.89>Br_8 under Pressure
Suzuki Y.; Miyagawa K.; Ibuka J.; Taniguchi H.; Kanoda K.
Meeting Abstracts of the Physical Society of Japan, Volume：70, First page：1581, Last page：1581, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.2.0_1581
DOI ID：10.11316/jpsgaiyo.70.2.0_1581, ISSN：2189-079X, CiNii Articles ID：110010029274, CiNii Books ID：AA12721570 - 17pAF-16 The ^1H-NMR study of X-ray irradiated κ-(ET)_2Cu[N(CN)_2]Cl
Urai M.; Furukawa T.; Miyagawa K.; Ito M.; Taniguchi H.; Saito M.; Sasaki T.; Kanoda K.
Meeting Abstracts of the Physical Society of Japan, Volume：70, First page：1586, Last page：1586, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.2.0_1586
DOI ID：10.11316/jpsgaiyo.70.2.0_1586, ISSN：2189-079X, CiNii Articles ID：110010029279, CiNii Books ID：AA12721570 - 17pAF-15 The phase diagram of X-ray irradiated κ-(ET)_2Cu[N(CN)_2]Cl under pressure
Urai M.; Furukawa T.; Miyagawa K.; Ito M.; Taniguchi H.; Saito M.; Sasaki T.; Kanoda K.
Meeting Abstracts of the Physical Society of Japan, Volume：70, First page：1585, Last page：1585, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.2.0_1585
DOI ID：10.11316/jpsgaiyo.70.2.0_1585, ISSN：2189-079X, CiNii Articles ID：110010029278, CiNii Books ID：AA12721570 - 18pAH-12 Non-linearity and noise property in dimer-Mott insulator β'-(BEDT-TTF)_2ICl_2
Kurosu M.; Hartmann B.; Muller J.; Iguchi S.; Tanigchi H.; Sasaki T.
Meeting Abstracts of the Physical Society of Japan, Volume：70, First page：1639, Last page：1639, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.2.0_1639
DOI ID：10.11316/jpsgaiyo.70.2.0_1639, ISSN：2189-079X, CiNii Articles ID：110010031367, CiNii Books ID：AA12721570 - 18pAH-1 Pressure-temperature phase diagram of quasi-one-dimensional charge ordered organic salts δ'c-(PT)_2X (X = ICl_2, AuCl_2)
Kobayashi R.; Hashimoto K.; Kurobe T.; Yoneyama N.; Taniguchi H.; Sasaki T.
Meeting Abstracts of the Physical Society of Japan, Volume：70, First page：1629, Last page：1629, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.2.0_1629
DOI ID：10.11316/jpsgaiyo.70.2.0_1629, ISSN：2189-079X, CiNii Articles ID：110010031361, CiNii Books ID：AA12721570 - 24aAB-4 Inhomogeneous Electric Polarization in Dimer-Mott Insulator β'-(BEDT-TTF)_2ICl_2
Iguchi Satoshi; Yoneyama Naoki; Taniguchi Hiromi; Sasaki Takahiko
Meeting Abstracts of the Physical Society of Japan, Volume：70, First page：1882, Last page：1882, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.1.0_1882
DOI ID：10.11316/jpsgaiyo.70.1.0_1882, ISSN：2189-079X, CiNii Articles ID：110009990080, CiNii Books ID：AA12721570 - 24aAB-5 Magnetic and charge fluctuation effects on superconductivity of β'-(BEDT-TTF)_2ICl_2 investigated by optical conductivity measurements under high pressure
Hashimoto K.; Kobayashi R.; Iguchi S.; Okamura H.; Taniguchi H.; Moriwaki T.; Ikemoto Y.; Naka M.; Ishihara S.; Sasaki T.
Meeting Abstracts of the Physical Society of Japan, Volume：70, First page：1883, Last page：1883, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.1.0_1883
DOI ID：10.11316/jpsgaiyo.70.1.0_1883, ISSN：2189-079X, CiNii Articles ID：110009990081, CiNii Books ID：AA12721570 - 24aAB-3 Transport noise measurements in dimer-Mott insulator β'-(BEDT-TTF)_2ICl_2
Kurosu M.; Hartmann B.; Mtiller J.; Kudo J.; Iguchi S.; Taniguchi H.; Sasaki T.
Meeting Abstracts of the Physical Society of Japan, Volume：70, First page：1881, Last page：1881, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.1.0_1881
DOI ID：10.11316/jpsgaiyo.70.1.0_1881, ISSN：2189-079X, CiNii Articles ID：110009990079, CiNii Books ID：AA12721570 - 22aAS-6 Transport study of X-ray irradiated k-(ET)_2Cu[N(CN)_2]Cl under pressure
Urai M.; Furukawa T.; Miyagawa K.; Taniguchi H.; Saito M.; Sasaki T.; Kanoda K.
Meeting Abstracts of the Physical Society of Japan, Volume：70, First page：1837, Last page：1837, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.1.0_1837
DOI ID：10.11316/jpsgaiyo.70.1.0_1837, ISSN：2189-079X, CiNii Articles ID：110009990059, CiNii Books ID：AA12721570 - 24pAB-7 Magneto-Transport Measurement of the Doped Triangular-Lattice Organic Conductor k-(ET)_4Hg_<2.89>Br_8 under Pressure
Ibuka J.; Oike H.; Itou T.; Miyagawa K.; Kanoda K.; Taniguchi H.
Meeting Abstracts of the Physical Society of Japan, Volume：70, First page：1920, Last page：1920, 2015
The Physical Society of Japan (JPS), Japanese
DOI：https://doi.org/10.11316/jpsgaiyo.70.1.0_1920
DOI ID：10.11316/jpsgaiyo.70.1.0_1920, ISSN：2189-079X, CiNii Articles ID：110009991451, CiNii Books ID：AA12721570 - 7aAG-2 Study of the insulating states in quasi-one-dimensional organic compounds α,α'-(BPDT-TTF)_2ICl_2 (I)
Hashimoto K.; Kobayashi R.; Iguchi S.; Kurobe T.; Yoneyama N.; Miura A.; Takei T.; Kumada N.; Watanabe M.; Noda Y.; Kumai R.; Taniguchi H.; Sasaki T.
Meeting abstracts of the Physical Society of Japan, Volume：69, Number：2, First page：588, Last page：588, 22 Aug. 2014
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009875965, CiNii Books ID：AA11439205 - 7aAG-3 Study of the insulating states in quasi-one-dimensional organic compounds α,α'-(BPDT-TTF)_2ICl_2 (II)
Kobayashi R.; Hashimoto K.; Iguchi S.; Kurobe T.; Yoneyama N.; Taniguchi H.; Sasaki T.
Meeting abstracts of the Physical Society of Japan, Volume：69, Number：2, First page：588, Last page：588, 22 Aug. 2014
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009875966, CiNii Books ID：AA11439205 - 30aCL-11 Raman scattering spectra of β'-(BEDT-TTF)_2ICl_2 under an electric field III
Hattoti Y.; Kishida H.; Iguchi S.; Sasaki T.; Iwai S.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：69, Number：1, First page：865, Last page：865, 05 Mar. 2014
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009836677, CiNii Books ID：AA11439205 - 30aCL-5 Magneto-Transport Measurement of the Triangular-Lattice Organic Conductor κ-(ET)_2X under Pressure
Ibuka J.; Oike H.; Itou T.; Miyagawa K.; Kanoda K.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：69, Number：1, First page：864, Last page：864, 05 Mar. 2014
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009836672, CiNii Books ID：AA11439205 - 30aCL-12 Optical study of a dimer-Mott insulator β'-(BEDT-TTF)_2ICl_2 under high pressure
Hashimoto K.; Kobayashi R.; Zhan S.; Iguchi S.; Taniguchi H.; Okamura H.; Moriwaki T.; Ikemoto Y.; Sasaki T.
Meeting abstracts of the Physical Society of Japan, Volume：69, Number：1, First page：865, Last page：865, 05 Mar. 2014
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009836678, CiNii Books ID：AA11439205 - 28aBC-14 Crossover from incoherent to coherent interlayer charge transport of α-(BEDT-TTF)_2NH_4Hg(SCN)_4
杉井 かおり; 宮川 和也; 鹿野田 一司; 谷口 弘三; 土屋 聡; 菊川 直樹; 寺嶋 太一; 宇治 進也
Meeting abstracts of the Physical Society of Japan, Volume：69, Number：1, First page：843, Last page：843, 05 Mar. 2014
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009836597, CiNii Books ID：AA11439205 - 有機伝導体の金属-絶縁体転移の研究
石井 康之; 鈴木 栄男; 谷口 弘三
First page：72, Last page：75, 2014
Japanese
ISSN：2185-7326, CiNii Articles ID：40020583071 - Hall Effect Measurement of the Doped Triangular-Lattice Organic Conductor κ-(ET)_4Hg_<2.89>Br_8 under Pressure
Ibuka J.; Oike H.; Itou T.; Miyagawa K.; Kanoda K.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：2, First page：780, Last page：780, 26 Aug. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009756166, CiNii Books ID：AA11439205 - Terahertz Time Domain Spectroscopy of β'-(BEDT-TTF)_2ICl_2
Itoh K.; Goto K.; Itoh H.; Saito S.; Kishida H.; Sasaki T.; Taniguchi H.; Iwai S.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：2, First page：766, Last page：766, 26 Aug. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009756115, CiNii Books ID：AA11439205 - Phonon anomaly in a dimer-Mott insulator β'-(BEDT-TTF)_2ICl_2 observed by inelastic neutron scattering
Kawamura S.Ohira; Matsuura M.; Iguchi S.; Sasaki T.; Taniguchi H.; Kubota A.; Satoh K.; Inamura Y.; Kikuchi T.; Kawakita Y.; Nakajima K.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：2, First page：766, Last page：766, 26 Aug. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009756116, CiNii Books ID：AA11439205 - Raman scattering spectra of β'-(BEDT-TTF)_2ICl_2 under an electric field II
Hattori Y.; Kishida H.; Iguchi S.; Sasaki T.; Iwai S.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：2, First page：766, Last page：766, 26 Aug. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009756114, CiNii Books ID：AA11439205 - Interlayer Resistivity Measurements on the Doped Triangular-Lattice Organic Conductor κ-(ET)_4Hg_<2.89>Br_8 under Pressure
Oike H.; Itou T.; Miyagawa K.; Kanoda K.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：2, First page：780, Last page：780, 26 Aug. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009756167, CiNii Books ID：AA11439205 - Electric field effects of Terahertz response of "electronic ferroelectricity"
Goto K.; Itoh K.; Itoh H.; Saito S.; Kishida H.; Sasaki T.; Taniguchi H.; Iwai S.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：2, First page：676, Last page：676, 26 Aug. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009755776, CiNii Books ID：AA11439205 - 26pXN-1 Terahertz Spectroscopy of θ-(BEDT-TTF)_2CsZn(SCN)_4
Yamazaki T.; Matsunaga R.; Taniguchi H.; Shimano R.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：1, First page：910, Last page：910, 26 Mar. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009645707, CiNii Books ID：AA11439205 - 29aXN-10 Resistivity Measurements on the Doped Triangular-Lattice Organic Conductor κ-(ET)_4Hg_<2.89>Br_8 under Pressure with Solidified Oil
Oike H.; Miyagawa K.; Kanoda K.; Taniguchi H.; Okamoto H.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：1, First page：959, Last page：959, 26 Mar. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009645881, CiNii Books ID：AA11439205 - 29aXN-6 Raman scattering spectra of β'-(BEDT-TTF)_2ICl_2 under an electric field
Hattori Y.; Kishida H.; Iguchi S.; Sasaki T.; Iwai S.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：1, First page：959, Last page：959, 26 Mar. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009645878, CiNii Books ID：AA11439205 - 29aXN-5 Terahertz Time Domain Spectroscopy of β'-(BEDT-TTF)_2ICl_2
Itoh K.; Goto K.; Itoh H.; Saito S.; Kishida H.; Sasaki T.; Taniguchi H.; Iwai S.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：1, First page：958, Last page：958, 26 Mar. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009645877, CiNii Books ID：AA11439205 - 29aXN-4 Dielectric properties of dimer-Mott insulator β'-(BEDT-TTF)_2ICl_2
Iguchi S.; Sasaki S.; Hosokawa T.; Yoneyama N.; Taniguchi H.; Sasaki T.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：1, First page：958, Last page：958, 26 Mar. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009645876, CiNii Books ID：AA11439205 - 29aXN-9 Quantum critical phenomena of Mott transition in κ-(BEDT-TTF)_2X (X=Cu[N(CN)_2]Cl,Cu_2(CN)_3
Furukawa T.; Miyagawa K.; Taniguchi K.; Kanoda K.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：1, First page：959, Last page：959, 26 Mar. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009645880, CiNii Books ID：AA11439205 - 29aXN-1 Magnetic field effect on the dielectric anomaly in dimer-Mott insulator
Sasaki S.; Iguchi S.; Yoneyama N.; Taniguchi H.; Sasaki T.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：1, First page：957, Last page：957, 26 Mar. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009645873, CiNii Books ID：AA11439205 - 28pPSB-53 Terahertz Time Domain Spectroscopy of κ-,β'-(BEDT-TTF)_2X
Goto K.; Itoh K.; Itoh H.; Saito S.; Taniguchi H.; Yoneyama N.; Sasaki T.; Iwai S.
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：1, First page：845, Last page：845, 26 Mar. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009645474, CiNii Books ID：AA11439205 - 26aXN-6 Studies of fluctuating superconductivity for the organic superconductor α-(ET)_2NH_4Hg(SCN)_4
Tsuchiya S; Fischer D; Sugii K; Miyagawa K; Kanoda K; Taniguchi H; Terashima T; Uji S
Meeting abstracts of the Physical Society of Japan, Volume：68, Number：1, First page：901, Last page：901, 26 Mar. 2013
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009645672, CiNii Books ID：AA11439205 - ダイマーモット絶縁体β’-(BEDT-TTF)2ICl2の磁気誘電性
井口敏; 佐々木智; 米山直樹; 米山直樹; 谷口弘三; 佐々木孝彦; 佐々木孝彦
Volume：2012, 2013
J-Global ID：201302279308361798 - Optical response of a dimer-Mott insulator with a square lattice β'-(BEDT-TTF)_2ICl_2
Hashimoto K; Kobayashi R; Zhan S; Iguchi S; Taniguchi H; Okamura H; Moriwaki T; Ikemoto Y; Sasaki T
Meeting Abstracts of the Physical Society of Japan, Volume：68, Number：0, First page：765, Last page：765, 2013
一般社団法人 日本物理学会, Japanese
ISSN：1342-8349, CiNii Articles ID：110009756113, CiNii Books ID：AA11439205 - 18pEB-4 Study on superconducting fluctuation of κ-ET_2X(X=Cu(NCS)_2, Cu[N(CN)_2]Br) by means of susceptibility measurement
Sakate D.; Uehara T.; Taniguchi H.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：67, Number：2, First page：755, Last page：755, 24 Aug. 2012
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009601258, CiNii Books ID：AA11439205 - 21aEB-4 Resistivity measurements of quasi-2D ionic material M_2P-TCNQF_4 under high pressure
Takehara R.; Miyagawa K.; Kanoda K.; Uemura H.; Matsuzaki H.; Okamoto H.; Taniguchi H.; Matsubayashi K.; Uwatoko Y.
Meeting abstracts of the Physical Society of Japan, Volume：67, Number：2, First page：800, Last page：800, 24 Aug. 2012
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009601421, CiNii Books ID：AA11439205 - 20pEB-8 Phase Diagrams of Doped Triangular Lattice κ-(ET)_4Hg_<2.89>Br_8 Under Uniaxial and Hydrostatic Pressures
Oike H.; Miyagawa K.; Kanoda K.; Taniguchi H.; Okamoto H.
Meeting abstracts of the Physical Society of Japan, Volume：67, Number：2, First page：790, Last page：790, 24 Aug. 2012
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009601382, CiNii Books ID：AA11439205 - 20pEB-9 分子性ダイマーモット絶縁体β'-(BEDT-TTF)_2ICl_2における強誘電リラクサー様の誘電特性(20pEB スピン液体(ダイマーモット),領域7(分子性固体・有機導体))
井口 敏; 佐々木 智; 米山 直樹; 谷口 弘三; 西嵜 照和; 佐々木 孝彦
Volume：67, Number：2, First page：790, Last page：790, 24 Aug. 2012
Japanese
ISSN：1342-8349, CiNii Articles ID：110009601383, CiNii Books ID：AA11439205 - 18pEB-1 Interlayer Incoherent Transport in α-(BEDT-TTF)_2NH_4Hg(SCN)_4
Sugii K; Miyagawa K; Kanoda K; Taniguchi H; Tsuchiya S; Terashima T; Uji S
Meeting abstracts of the Physical Society of Japan, Volume：67, Number：2, First page：754, Last page：754, 24 Aug. 2012
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009601255, CiNii Books ID：AA11439205 - 27pBK-9 Resistivity measurements on doped Mott insulator with triangular lattice under uniaxial strain
Oike H.; Miyagawa K.; Kanoda K.; Taniguchi H.; Okamoto H.
Meeting abstracts of the Physical Society of Japan, Volume：67, Number：1, First page：930, Last page：930, 05 Mar. 2012
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009568229, CiNii Books ID：AA11439205 - 27pBK-8 Study on the Mott transition of κ-ET_2Cu[N(CN)_2]Cl by using SQUID magnetometer under He gas pressure
Onodera Y.; Ito M.; Taniguchi H.; Satoh K.; Ishii Y.; Watanabe I.
Meeting abstracts of the Physical Society of Japan, Volume：67, Number：1, First page：930, Last page：930, 05 Mar. 2012
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009568228, CiNii Books ID：AA11439205 - 26pBK-9 Development of ESR system in a cubic anvil cell and the electronic states of β'-(BEDT-TTF)_2ICl_2
Takakura H.; Mizoguchi K.; Sakamoto H.; Taniguchi S.; Taniguchi H.; Takeshita N.
Meeting abstracts of the Physical Society of Japan, Volume：67, Number：1, First page：908, Last page：908, 05 Mar. 2012
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009568146, CiNii Books ID：AA11439205 - 21aTQ-3 Development of ESR system in a cubic anvil cell and the electronic states of β'-(BEDT-TTF)_2ICl_2
Takakura H.; Mizoguchi K.; Sakamoto H.; Taniguchi S.; Taniguchi H.; Takeshita N.
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：2, First page：839, Last page：839, 24 Aug. 2011
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008760319, CiNii Books ID：AA11439205 - 22pTR-15 Physical Properties of Organic Mott Insulators, (BPDT-TTF)_2X (X=ICl_2, IBr_2 and I_3)
Shinkawa T.; Manabe Y.; Taniguchi A.; Taniguchi H.; Satoh K.; Matsubayashi K.; Uwatoko Y.
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：2, First page：875, Last page：875, 24 Aug. 2011
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008760462, CiNii Books ID：AA11439205 - 22pTR-12 Ultrafast dynamics of excited state in dimer Mott insulator β'-(BEDT-TTF)_2IC_2 II
Unno H.; Sakurai Y.; Ishikawa T.; Kawakami Y.; Itoh H.; Iwai S.; Sasaki T.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：2, First page：874, Last page：874, 24 Aug. 2011
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008760459, CiNii Books ID：AA11439205 - 22pTR-11 Dielectric response in square lattice dimer-Mott insulator β'-(BEDT-TTF)_2ICl_2
Iguchi Satoshi; Taniguchi Hiromi; Yoneyama Naoki; Sasaki Takahiko
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：2, First page：874, Last page：874, 24 Aug. 2011
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008760458, CiNii Books ID：AA11439205 - 23aTE-4 Difference of electric conduction mechanism between two ionic phases of TTF-CA
Takehara R.; Miyagawa K.; Kanoda K.; Uemura H.; Matsuzaki H.; Okamoto H.; Taniguchi H.; Matsubayashi K.; Uwatoko Y.
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：2, First page：876, Last page：876, 24 Aug. 2011
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008760467, CiNii Books ID：AA11439205 - 28aTK-6 Development of ESR system in a cubic anvil cell and the electronic states of β'-(BEDT-TTF)_2ICl_2
Taniguchi S.; Mizoguchi K.; Sakamoto H.; Takakura H.; Taniguchi H.; Takeshita N.
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：1, First page：889, Last page：889, 03 Mar. 2011
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008715463, CiNii Books ID：AA11439205 - 28aTK-11 An anisotropy of the resistivity of the NI transition material, TTF-CA, under uniaxial pressure
Okamoto H.; Taniguchi H.; Matsubayashi K.; Uwatoko Y.
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：1, First page：890, Last page：890, 03 Mar. 2011
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008715468, CiNii Books ID：AA11439205 - 27pTG-5 Terahertz time domain spectroscopy of β'-(BEDT-TTF)_2ICl_2
Itoh K.; Nakaya H.; Kawakami Y.; Itoh H.; Iwai S.; Saito S.; Sasaki T.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：1, First page：883, Last page：883, 03 Mar. 2011
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008715438, CiNii Books ID：AA11439205 - 25aTA-6 ^<13>C-NMR of a single crystal of β"-(BEDT-TTF)_3Cl_2・2H_2O.
Nagata Sanato; Kawamoto Atsushi; Taniguchi Hiromi
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：1, First page：843, Last page：843, 03 Mar. 2011
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008715287, CiNii Books ID：AA11439205 - 25pHC-1 Ultrafast relaxation process of excited state in dimer Mott insulator β'-(BEDT-TTF)_2ICl_2
Unno H.; Sakurai Y.; Fukatsu T.; Kawakami Y.; Itoh K.; Itoh H.; Iwai S.; Sasaki T.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：1, First page：742, Last page：742, 03 Mar. 2011
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008714931, CiNii Books ID：AA11439205 - 25pHC-5 Terahertz pump-terahertz probe spectroscopy in the charge order phase of θ-(BEDT-TTF)_2CsZn(SCN)_4
Tsubota S.; Watanabe S.; Taniguchi H.; Shimano R.
Meeting abstracts of the Physical Society of Japan, Volume：66, Number：1, First page：743, Last page：743, 03 Mar. 2011
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008714935, CiNii Books ID：AA11439205 - 24pRB-12 Pressure and Strain-effect on κ-(MDT-TTF)_2Aul_2
Tsukiyama Y.; Taniguchi A.; Taniguchi H.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：65, Number：2, First page：561, Last page：561, 18 Aug. 2010
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008098584, CiNii Books ID：AA11439205 - 23pRB-11 Development of ESR system in cubic anvils and the electronic states of β'-(BEDT-TTF)_2ICl_2
Taniguchi S.; Mizoguchi K.; Sakamoto H.; Taniguchi H.; Takeshita N.
Meeting abstracts of the Physical Society of Japan, Volume：65, Number：2, First page：783, Last page：783, 18 Aug. 2010
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008099406, CiNii Books ID：AA11439205 - 24pRB-12 Pressure and Strain-effect on κ-(MDT-TTF)_2AuI_2
Tsukiyama Y.; Taniguchi A.; Taniguchi H.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：65, Number：2, First page：803, Last page：803, 18 Aug. 2010
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008099486, CiNii Books ID：AA11439205 - 24pRB-13 Study on magnetic properties of d8-κ-(BEDT-TTF)_2Cu(N(CN)_2]Br on Muon Spin Rotation and Relaxation
Ito M.; Taniguchi H.; Satoh K.; Ishii Y.; Watanabe I.
Meeting abstracts of the Physical Society of Japan, Volume：65, Number：2, First page：803, Last page：803, 18 Aug. 2010
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008099487, CiNii Books ID：AA11439205 - 23pRB-1 Synthesis of Charge-Transfer Complexes by the electrochemical oxidation under high pressure
Okabe N.; Tenkawa T.; Taniguchi H.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：65, Number：2, First page：780, Last page：780, 18 Aug. 2010
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008099397, CiNii Books ID：AA11439205 - 26aRL-10 Transport properties of the NI transition material, TTF-CA, under high pressure
Takehara R.; Miyagawa K.; Kanoda K.; Okamoto H.; Taniguchi H.; Matsubayashi K.; Uwatoko Y.
Meeting abstracts of the Physical Society of Japan, Volume：65, Number：2, First page：833, Last page：833, 18 Aug. 2010
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008099586, CiNii Books ID：AA11439205 - 23pRB-1 Synthesis of Charge-Transfer Complexes by the electrochemical oxidation under high pressure
Okabe N.; Tenkawa T.; Taniguchi H.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：65, Number：2, First page：213, Last page：213, 18 Aug. 2010
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110008097244, CiNii Books ID：AA11439205 - 21aGR-9 Transport measurement of TTF-CA under high pressure
Takehara R.; Miyagawa K.; Kanoda K.; Okamoto H.; Taniguchi H.; Matsubayashi K.; Uwatoko Y.
Meeting abstracts of the Physical Society of Japan, Volume：65, Number：1, First page：870, Last page：870, 01 Mar. 2010
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007657032, CiNii Books ID：AA11439205 - 22pGT-17 Development of ESR in cubic anvils and the electronic states of β'-(BEDT-TTF)_2ICl_2
Taniguchi S.; Mizoguchi K.; Sakamoto H.; Taniguchi H.; Takeshita N.
Meeting abstracts of the Physical Society of Japan, Volume：65, Number：1, First page：906, Last page：906, 01 Mar. 2010
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007657171, CiNii Books ID：AA11439205 - 26aYC-2 Development of ESR in cubic anvils and the electronic states of β'-(BEDT-TTF)_2ICl_2
Taniguchi S.; Mizoguchi K.; Sakamoto H.; Taniguchi H.; Takeshita N.
Meeting abstracts of the Physical Society of Japan, Volume：64, Number：2, First page：745, Last page：745, 18 Aug. 2009
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007498719, CiNii Books ID：AA11439205 - 26aYC-7 The measurement of angle-resolved thermoelectric power in a layered organic conductor, κ-(BEDT-TTF)_2Cu(NCS)_2
Yanai T.; Taniguchi H.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：64, Number：2, First page：746, Last page：746, 18 Aug. 2009
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007498724, CiNii Books ID：AA11439205 - 26aYC-1 Synthesis of an organic charge-transfer complex (BEDT-TTF)(TCNQ) under high pressures
Tenkawa T.; Taniguchi H.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：64, Number：2, First page：744, Last page：744, 18 Aug. 2009
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007498718, CiNii Books ID：AA11439205 - 28aYF-10 Contactless conductivity measurements on the doped Mott insulator with triangular lattice, κ-(ET)_4Hg_<2.89>Br_8, under pressure
Oike H.; Miyagawa K.; Kanoda K.; Taniguchi H.; Murata K.
Meeting abstracts of the Physical Society of Japan, Volume：64, Number：1, First page：823, Last page：823, 03 Mar. 2009
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007372799, CiNii Books ID：AA11439205 - 28aYF-7 μSR study of β'-(BEDT-TTF)_2ICl_2 under high pressure II
Sato K.; Taniguchi H.; Satoh K.; Ito T. U.; Higemoto W.; Goko T.
Meeting abstracts of the Physical Society of Japan, Volume：64, Number：1, First page：823, Last page：823, 03 Mar. 2009
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007372797, CiNii Books ID：AA11439205 - 28aYF-1 Comparison between physical properties of κ-(MDT-TTF)_2AuI_2 and κ-(BEDT-TTF)_2X
Taniguchi A.; Manabe Y.; Taniguchi H.; satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：64, Number：1, First page：821, Last page：821, 03 Mar. 2009
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007372791, CiNii Books ID：AA11439205 - 28aYF-12 Ac susceptibility of κ-(ET)_4Hg_<2.78>Cl_8 under pressures
Watanabe J.; Satoh H.; Tamura K.; Taniguchi H.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：64, Number：1, First page：824, Last page：824, 03 Mar. 2009
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007372801, CiNii Books ID：AA11439205 - 23pTC-4 Contactless conductivity measurements on the organic conductor, κ-(ET)_4Hg_<2.89>Br_8, under pressures
Oike H.; Taniguchi H.; Miyagawa K.; Kanoda K.
Meeting abstracts of the Physical Society of Japan, Volume：63, Number：2, First page：793, Last page：793, 25 Aug. 2008
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110006985439, CiNii Books ID：AA11439205 - 23pTC-5 NMR study of a doped organic conductor κ-(BEDT-TTF)_4Hg_<2.78>Cl_8 under hydrostatic pressure (2)
Kurosaki Yosuke; Furuta Akira; Taniguchi Hiromi; Miyagawa Kazuya; Kanoda Kazushi
Meeting abstracts of the Physical Society of Japan, Volume：63, Number：2, First page：793, Last page：793, 25 Aug. 2008
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110006985440, CiNii Books ID：AA11439205 - 26aWB-3 ESR study on β'-, β"-(BEDT-TTF)(TCNQ)
Kato A.; Kihara T.; Mizoguchi K.; Sakamoto H.; Konno S.; Kazama S.; Taniguchi H.; Nakamura T.; Furukawa K.
Meeting abstracts of the Physical Society of Japan, Volume：63, Number：1, First page：844, Last page：844, 29 Feb. 2008
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007194394, CiNii Books ID：AA11439205 - 26pWB-2 NMR study in superconducting state of κ-(BEDT-TTF)_4Hg_<2.89>Br_8
Miyagawa K.; Oike H.; Taniguchi H.; Kanoda K.
Meeting abstracts of the Physical Society of Japan, Volume：63, Number：1, First page：852, Last page：852, 29 Feb. 2008
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007194794, CiNii Books ID：AA11439205 - 26pWB-3 NMR study of a doped organic conductor κ-(BEDT-TTF)_4Hg_<2.78>Cl_8 under hydrostatic pressure
Kurosaki Yosuke; Furuta Akira; Miyagawa Kazuya; Taniguchi Kozo; Kanoda Kazushi
Meeting abstracts of the Physical Society of Japan, Volume：63, Number：1, First page：853, Last page：853, 29 Feb. 2008
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007194793, CiNii Books ID：AA11439205 - β′‐(BEDT‐TTF)2ICl2の圧力下μSR
吉田哲茂; 佐藤功一; 谷口弘三; 佐藤一彦; 伊藤孝; 大石一城; 髭本亘; 後神達郎
日本物理学会講演概要集, Volume：63, Number：1, First page：844, 29 Feb. 2008
Japanese
ISSN：1342-8349, J-Global ID：200902244009931528 - 26aWB-2 μSR study of β'-(BEDT-TTF)_2ICl_2 under high pressure
Yoshida T; Satoh K; Taniguchi H; Sato K; Ito T. U; Ohishi K; Higemoto W; Goko T
Meeting abstracts of the Physical Society of Japan, Volume：63, Number：1, 29 Feb. 2008
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007194395 - 23pRB-14 Interlayer magnetoresistance in a layered metal α(BEDT-TTF)_2TlHg(SeCN)_4 under magnetic fields parallel to layers
Sugawara S.; Tajima N.; Taniguchi H.; Nishio Y.; Kajita K.
Meeting abstracts of the Physical Society of Japan, Volume：62, Number：2, First page：884, Last page：884, 21 Aug. 2007
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007142546, CiNii Books ID：AA11439205 - 18aRA-7 Physical properties of β'-(BEDSe-TTF)_2X(X=ICl_2, IBr_2) under ultra-high pressure
Komatsu H.; Katayama K.; Taniguchi H.; Satoh K.; Kawamoto A.; Hedo M.; Uwatoko Y.
Meeting abstracts of the Physical Society of Japan, Volume：62, Number：1, First page：804, Last page：804, 28 Feb. 2007
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007192622, CiNii Books ID：AA11439205 - 21aRA-4 Dielectric response in α'-(BEDT-TTF)_2IBr_2
Kambe T.; Kajiyoshi K.; Oshima K.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：62, Number：1, First page：855, Last page：855, 28 Feb. 2007
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007192465, CiNii Books ID：AA11439205 - 18pRA-7 Hall effect of κ-(BEDT-TTF)_4Hg_<2.89>Br_8 under high pressure
Katayama K.; Tamura K.; Okuhata T.; Taniguchi H.; Satoh K.; Tajima N.; Kato R.
Meeting abstracts of the Physical Society of Japan, Volume：62, Number：1, First page：812, Last page：812, 28 Feb. 2007
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007192548, CiNii Books ID：AA11439205 - 18aRA-10 ESR study on β'-(BEDT-TTF)_2ICl_2 under Pressure V
Endo W.; Sakamoto H.; Mizoguchi K.; Taniguchi H.; Takeshita N.; Terakura C.; Takagi H.; Tokura Y.
Meeting abstracts of the Physical Society of Japan, Volume：62, Number：1, First page：805, Last page：805, 28 Feb. 2007
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007191512, CiNii Books ID：AA11439205 - 18aRA-12 Electronic States of β"-(BEDT-TTF)(TCNQ) by ESR with various frequency
Kihara T.; Sakamoto H.; Mizoguchi K.; Konno S.; Kazama S.; Taniguchi H.; Nakamura T.; Furukawa K.
Meeting abstracts of the Physical Society of Japan, Volume：62, Number：1, First page：805, Last page：805, 28 Feb. 2007
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007191514, CiNii Books ID：AA11439205 - 18aRA-11 ESR study on β'-(BEDT-TTF)(TCNQ)
Kato A.; Kihara T.; Sakamoto H.; Mizoguchi K.; Konno S.; Kazama S.; Taniguchi H.; Nakamura T.; Furukawa K.
Meeting abstracts of the Physical Society of Japan, Volume：62, Number：1, First page：805, Last page：805, 28 Feb. 2007
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007191513, CiNii Books ID：AA11439205 - 18pRA-8 Study of magnetism of κ-(BEDT-TTF)_4Hg_<2.89>Br_8 by μSR
Fujita H; Satoh K; Okuhata T; Katayama K; Taniguchi H; Ito T. U; Ohishi K; Higemoto W
Meeting abstracts of the Physical Society of Japan, Volume：62, Number：1, First page：813, Last page：813, 28 Feb. 2007
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007192547, CiNii Books ID：AA11439205 - 23aYB-6 A low frequency ESR study on β'-(BEDT-TTF)(TCNQ) under Pressure
Kato A.; Kihara T.; Sakamoto H.; Mizoguchi K.; Konno S.; Kazama S.; Taniguchi H.; Nakamura T.; Furukawa K.; Hiraoka M.
Meeting abstracts of the Physical Society of Japan, Volume：61, Number：2, First page：660, Last page：660, 18 Aug. 2006
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007182456, CiNii Books ID：AA11439205 - 23aYB-2 Electronic States of β"-(BEDT-TTF)(TCNQ)
Kihara T.; Sakamoto H.; Mizoguchi K.; Konno S.; Kazama S.; Taniguchi H.; Nakamura T.; Furukawa K.; Hiraoka M.
Meeting abstracts of the Physical Society of Japan, Volume：61, Number：2, First page：659, Last page：659, 18 Aug. 2006
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007182459, CiNii Books ID：AA11439205 - 23aYB-5 ESR study on β'-(BEDT-TTF)_2ICl_2 under Pressure IV
Endo W.; Sakamoto H.; Mizoguchi K.; Taniguchi H.; Takeshita N.; Terakura C.; Takagi H.; Tokura Y.
Meeting abstracts of the Physical Society of Japan, Volume：61, Number：2, First page：659, Last page：659, 18 Aug. 2006
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007182016, CiNii Books ID：AA11439205 - Towards Frontier Photonics Based on Advanced Materials
鎌田 憲彦; 明連 広昭; 矢口 裕之; 谷口 弘三
埼玉大学紀要. 工学部 第1編 第1部 論文集, Volume：39, First page：138, Last page：142, Jul. 2006
Based on science and technology of advanced materials, the quantum mechanical nature of photons can be utilized for expanding the available spectral window and strengthening the security of our social systems. Towards such frontier photonics, we started to study some basic elements from physical and technological aspects. We succeeded in growing β'-(BEDT-TTF)2ICl2 single crystals, detecting THz signal by our superconducting tunneling junction device. An in-situ ellipsometry enabled us to monitor thermal oxidation process of SiC surface, and a spectroscopic detection of non-radiative centers in a InAs/GaAs quantum dot structure became possible. The combination of quantum-mechanical design, nano-scale fabrication and detailed characterization is considered to be essential for proceeding the research frontier of brilliant photonics world.
埼玉大学工学部, Japanese
ISSN：1880-4446, CiNii Articles ID：120001370444 - 27aRB-8 Pressure effect of an organic superconductor, κ-(BEDT-TTF)_4Hg_<2.78>Cl_8
Okuhata T.; Shimoyama K.; Taniguchi H.; Satoh K.; Hedo M.; Uwatoko Y.
Meeting abstracts of the Physical Society of Japan, Volume：61, Number：1, First page：801, Last page：801, 04 Mar. 2006
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007179985, CiNii Books ID：AA11439205 - 27aRB-6 ESR Study in β'-(BEDT-TTF) (TCNQ) IV
Konno S.; Kazama S.; Hiraoka M.; Katou A.; Sakamoto H.; Mizoguchi K.; Taniguchi H.; Nakamura T.; Furukawa K.
Meeting abstracts of the Physical Society of Japan, Volume：61, Number：1, First page：801, Last page：801, 04 Mar. 2006
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007179986, CiNii Books ID：AA11439205 - 27aRB-9 Hall effect of κ-(BEDT-TTF)_2X under high pressure
Katayama K.; Taniguchi H.; Satoh K.; Tajima N.; Kato R.
Meeting abstracts of the Physical Society of Japan, Volume：61, Number：1, First page：802, Last page：802, 04 Mar. 2006
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007180349, CiNii Books ID：AA11439205 - 27aRB-4 ESR Study on β'-(BEDT-TTF)_2ICl_2 under Pressure III
Sakamoto H.; Endo W.; Mizoguchi K.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：61, Number：1, First page：800, Last page：800, 04 Mar. 2006
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007180351, CiNii Books ID：AA11439205 - 27aRB-7 ESR Study in (BEDT-TTF) (TCNQ)
Kihara T.; Sakamoto H.; Mizoguchi K.; Konno S.; Kazama S.; Taniguchi H.; Nakamura T.; Furukawa K.; Hiraoka M.
Meeting abstracts of the Physical Society of Japan, Volume：61, Number：1, First page：801, Last page：801, 04 Mar. 2006
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110007180350, CiNii Books ID：AA11439205 - High-pressure study of a doped-type organic superconductor, kappa-(BEDT-TTF)(4)Hg2.89Br8
T. Okuhata; T. Nagai; H. Taniguchi; K. Satoh; T. Itou; Y. Shimizu; K. Miyagawa; Y. Ishii; N. Tajima; R. Kato
JOURNAL OF LOW TEMPERATURE PHYSICS, Volume：142, Number：3-4, First page：547, Last page：550, Feb. 2006
Physical properties of the organic charge-transfer complex that may be regarded as a doping system are presented. We measured resistivity of an ambient-pressure superconductor, kappa-(BEDT-TTF)(4)Hg2.89Br8, as functions of temperature, magnetic field, and pressure. Metallic and superconducting states of this salt are possibly attributable to the doping effect, which originates from incommensurability of Hg chain because band structure calculation predicts strong electron-electron correlation enough to localize the itinerant electrons. We uncovered anomalous pressure and magnetic field dependences of superconductivity as well as non-Fermi liquid behavior in the normal-state resistivity at low pressures. In addition, we observed a pressure-induced crossover to the Fermi liquid behavior, which is seen in non-doped kappa-type salts at any pressures.
SPRINGER/PLENUM PUBLISHERS, English
DOI：https://doi.org/10.1007/s10909-006-9162-3
DOI ID：10.1007/s10909-006-9162-3, ISSN：0022-2291, Web of Science ID：WOS:000240657500089 - ミュオンスピン回転緩和法によるBEDT-TTF系層状有機物質の磁性研究<マイレビュー>
佐藤 一彦; 谷口 弘三
MaLS FORUM, Volume：3, 2006
Japanese
CiNii Articles ID：120001438117 - 19aWB-11 ESR Study in B'(BEDT-TTF)(TCNQ) III
Konno S.; Kazama S.; Hiraoka M.; Sakamoto H.; Mizoguchi K.; Taniguchi H.; Nakamura T.; Furukawa K.
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：2, First page：672, Last page：672, 19 Aug. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004559501, CiNii Books ID：AA11439205 - 19pWB-5 Photoconductivity of Mott insulator, β'-(BEDT-TTF)_2ICl_2
Fujisawa J.; Tajima N.; Kato R.; Taniguchi H.; Ishihara T.
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：2, First page：676, Last page：676, 19 Aug. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004559518, CiNii Books ID：AA11439205 - 19aWB-10 ESR Study in (BEDT-TTF)(TCNQ)
Kihara T.; Sakamoto H.; Mizoguchi K.; Konno S.; Kazama S.; Taniguchi H.; Nakamura T.; Furukawa K.; Hiraoka M.
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：2, First page：672, Last page：672, 19 Aug. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004559500, CiNii Books ID：AA11439205 - 19pWB-4 ESR Study on β'-(BEDT-TTF)_2ICl_2 under Pressure II
Sakamoto H.; Endo W.; Mizoguchi K.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：2, First page：676, Last page：676, 19 Aug. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004559517, CiNii Books ID：AA11439205 - 19aWB-9 Study of magnetism of β'-(BEDT-TTF)(TCNQ) by μSR
Fujita H.; Satoh K.; Satoh R.; Taniguchi H.; Higemoto W.
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：2, First page：672, Last page：672, 19 Aug. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004559499, CiNii Books ID：AA11439205 - High-pressure study up to 9.9 GPa of organic Mott insulator, beta '-(BEDT-TTF)(2)AuCl2
H Taniguchi; M Miyashita; K Uchiyama; R Sato; Y Ishii; K Satoh; N Mori; M Hedo; Y Uwatoko
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Volume：74, Number：5, First page：1370, Last page：1373, May 2005
We have investigated the resistivity of an organic Mott insulator, beta '-(BEDT-TTF)(2)AUCl(2), under extremely high pressures of up to 9.9 GPa, using the cubic anvil press, motivated by the fact that a related material, beta '-(BEDT-TTF)(2)ICl2, shows the highest transition-temperature superconductivity among organics at 8.2GPa. Through characterization by resistivity and susceptibility measurements at ambient pressure, we have confirmed that these two salts have common physical properties. Nevertheless, beta '-(BEDT-TTF)(2)AuCl2 does not show superconductivity but remains semiconducting up to 9.9GPa. We discuss the origin of these contrasting behaviors and suggest the cause to be the difference in anion size between the two salts.
PHYSICAL SOC JAPAN, English
DOI：https://doi.org/10.1143/JPSJ.74.1370
DOI ID：10.1143/JPSJ.74.1370, ISSN：0031-9015, CiNii Articles ID：110001979537, Web of Science ID：WOS:000229294400005 - The origin of the phase separation in partially deuterated κ-(ET)
2 Cu[N(CN)2 ]Br studied by infrared magneto-optical imaging spectroscopy
T. Nishi; S. Kimura; T. Takahashi; T. Ito; H. J. Im; Y. S. Kwon; K. Miyagawa; H. Taniguchi; A. Kawamoto; K. Kanoda
Solid State Communications, Volume：134, First page：189, Last page：193, 01 Apr. 2005
The direct observation of the phase separation between the metallic and insulating states of 75%-deuterated κ-(ET)2Cu[N(CN) 2]Br (d33) using infrared magneto-optical imaging spectroscopy is reported, as well as the associated temperature, cooling rate, and magnetic field dependencies of the separation. The distribution of the center of spectral weight (〈ω〉) of d33 did not change under any of the conditions in which data were taken and was wider than that of the non-deuterated material. This result indicates that the inhomogenity of the sample itself is important as part of the origin of the metal-insulator phase separation. © 2005 Elsevier Ltd. All rights reserved.
DOI：https://doi.org/10.1016/j.ssc.2005.01.026
DOI ID：10.1016/j.ssc.2005.01.026, ISSN：0038-1098, SCOPUS ID：20044394356 - 24aYL-3 ESR Study on β'-(BEDT-TTF)_2ICl_2 under Pressure
Sakamoto H.; Mizoguchi K.; Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：1, First page：771, Last page：771, 04 Mar. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004537012, CiNii Books ID：AA11439205 - 24aYL-2 Growth of large single crystals of β'-(BEDT-TTF)_2ICl_2 and evaluation of them
谷口 弘三; 佐藤 亮介; 佐藤 一彦; 河本 充司; 岡本 博之; 小林 拓男; 水野 薫
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：1, First page：770, Last page：770, 04 Mar. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004537011, CiNii Books ID：AA11439205 - 24aYL-1 Single crystal neutron diffraction study for magnetic order and π-electron density distribution of β'-ET_2ICl_2
Matsunaga Atsushi; Komiyama Satoshi; Watanabe Masashi; Noda Yukio; Taniguchi Hiromi; Kawamoto Atsushi; Uwatoko Yoshiya
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：1, First page：770, Last page：770, 04 Mar. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004537010, CiNii Books ID：AA11439205 - 24aYL-10 ESR Study in (BEDT-TTF)(TCNQ) II
Konno S.; Kazama S.; Hiraoka M.; Sakamoto H.; Mizoguchi K.; Taniguchi H.; Nakamura T.; Furukawa K.
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：1, First page：772, Last page：772, 04 Mar. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004537018, CiNii Books ID：AA11439205 - 24aYL-6 Study of magnetism of β'-(BEDT-TTF)_2ICl_2 by μSR
Satoh K.; Taniguchi H.; Kawamoto A.; Higemoto W.; Nishiyaa K.
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：1, First page：771, Last page：771, 04 Mar. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004537014, CiNii Books ID：AA11439205 - 24aYL-9 Pressure-induced anomalous metallic phase in (BEDT-TTF)(TCNQ)
Satoh R.; Uchiyama K.; Taniguchi H.; Satoh K.; Tajima N.; Katoh R.
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：1, First page：772, Last page：772, 04 Mar. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004537017, CiNii Books ID：AA11439205 - 27aYL-8 Pressure effect on an organic superconductor, κ-(BEDT-TTF)_4Hg_<2.89>Br_8 II
Okuhata T.; Nagai T.; Taniguchi H.; Satoh K.; Itou T.; Miyagawa K.; Kanoda K.
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：1, First page：817, Last page：817, 04 Mar. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004537178, CiNii Books ID：AA11439205 - 26pYL-1 ESR study of α'-(ET)_2IBr_2
神戸 高志; 野上 由夫; 大嶋 孝吉; 谷口 弘三; 斉藤 軍治
Meeting abstracts of the Physical Society of Japan, Volume：60, Number：1, First page：805, Last page：805, 04 Mar. 2005
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110004537133, CiNii Books ID：AA11439205 - Pressure induced superconductivity of organic materials β'-(BEDT-TTF)2ICl2 and development of extremely high pressure cell
Mika Kano; Masato Hedo; Yoshiya Uwatoko; Masashi Miyashita; Hiromi Taniguchi
Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu, Volume：15, Number：4, First page：333, Last page：340, 2005
The results of electrical resistivity measurements for β'-(BEDT-TTF) 2ICl2 under extremely high pressures are reviewed. We have found that the ambient-pressure Mott insulator, β'- (BEDT-TTF) 2ICl2, shows superconductivity under extreme pressures above 7.0 GPa. The superconducting temperature Tc which reached 14.2 K as an onset renewed the previous records of the organic charge-transfer complexes. The cubic anvil high pressure cell and the turn-buckle type diamond anvil high pressure cell which were used for electrical measurements up to 11 GPa are also introduced in this article.
Japan Society of High Pressure Science and Technology, Japanese, Book review
DOI：https://doi.org/10.4131/jshpreview.15.333
Scopus：https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=29244431606&origin=inward
Scopus Citedby：https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=29244431606&origin=inward
DOI ID：10.4131/jshpreview.15.333, ISSN：1348-1940, eISSN：1348-1940, SCOPUS ID：29244431606 - 12pWH-13 High resolution NMR in 4k_F-CDW state of DCNQI systems
Shinohara Y.; Masubuchi S.; Kazama S.; Hiraoka M.; Sakamoto H.; Mizoguchi K.; Kato R.; Hiraki K.; Takahashi T.; Taniguchi H.; Yamamoto T.; Tajima H.
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：2, First page：743, Last page：743, 25 Aug. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002049645, CiNii Books ID：AA11439205 - 13pPSA-49 Photoinduced insulator-metal transitions in organic strongly-correlated electron systems : BEDT-TTF salts
Fujisawa J.; Tajima N.; Kato R.; Taniguchi H.; Ishihara T.
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：2, First page：667, Last page：667, 25 Aug. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002048796, CiNii Books ID：AA11439205 - 13pWE-3 Magnetoresistance measurements on β'-(BEDT-TTF)_2ICl_2 under high pressure
Kano M.; Hedo M.; Uwatoko Y.; Tozer S. W.; Miyashita M.; Taniguchi H.; Satoh K.; Katoh Y.; Kosaka M.; Mori N.
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：2, First page：753, Last page：753, 25 Aug. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002049753, CiNii Books ID：AA11439205 - 13pWE-2 Crystal Structure Analysis for Organic Conductor β'-(BEDT-TTF)_2ICl_2 by Neutron Diffraction
Matsunaga Atsushi; Komiyama Satoshi; Watanabe Masashi; Noda Yukio; Uwatoko Yoshiya; Kawamoto Atsushi; Taniguchi Hiromi
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：2, First page：752, Last page：752, 25 Aug. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002049750, CiNii Books ID：AA11439205 - 13pWE-8 ^<13>C-NMR study of (BEDT-TTF)_3Cl_2・2H_2O
Ogura Takashi; Kawamoto Atsushi; Kumagai Kenichi; Tanigichi Hiromi
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：2, First page：754, Last page：754, 25 Aug. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002049766, CiNii Books ID：AA11439205 - 14aTM-7 Photoconductivity of organic conductors : α-(BEDT-TTF)_2I_3 and other materials
Tajima N.; Fujisawa J.; Naka N.; Ishihara T.; Taniguchi H.; Kato R.; Kajita K.
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：2, First page：764, Last page：764, 25 Aug. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002049887, CiNii Books ID：AA11439205 - 14aTM-6 Crystal Structure of (BEDT-TTF)_2BrICl at Low Temperature
Watanabe Masashi; Matsunaga Atsushi; Noda Yukio; Taniguchi Hiromi
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：2, First page：764, Last page：764, 25 Aug. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002049884, CiNii Books ID：AA11439205 - 29pWL-1 Pressure effect on (BEDT-TTF)(TCNQ)
Taniguchi H.; Uchiyama K.; Miyashita M.; Satoh K.; Uwatoko Y.; Ishii Y.; Tajima N.; Tamura M.; Kato R.
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：1, First page：857, Last page：857, 03 Mar. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002199014, CiNii Books ID：AA11439205 - 29pWL-5 Transport phenomenon of (BEDT-TTF)_4Cl_2・(H_2O)_4
Taguchi T.; Namai Y.; Taniguchi H.; Sato K.; Nakao A.; Tajima N.; Tamura M.; Kato R.
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：1, First page：858, Last page：858, 03 Mar. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002199035, CiNii Books ID：AA11439205 - 27pWL-6 Pressure effect on α'-(BEDT-TTF)_2X(X=IBr_2, IBrCl)
Takeda S.; Uchiyama K.; Taniguchi H.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：1, First page：830, Last page：830, 03 Mar. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002198477, CiNii Books ID：AA11439205 - 28aXJ-3 Uniaxial Strain effect on β'-(BEDT-TTF)_2X(X=AuCl_2,ICl_2)
Satoh R.; Miyasita M.; Taniguchi H.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：1, First page：844, Last page：844, 03 Mar. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002198740, CiNii Books ID：AA11439205 - 28aXJ-2 Magnetoresistance measurements on β'-(BEDT-TTF)_2ICl_s
Kano M.; Hedo M.; Uwatoko Y.; Tozer S. W.; Miyashita M.; Uchiyama K.; Taniguchi H.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：1, First page：843, Last page：843, 03 Mar. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002198735, CiNii Books ID：AA11439205 - 27aWL-9 Pressure effect on an organic superconductor, κ-(BEDT-TTF)_4Hg_<2.89>Br_8
Nagai T.; Taniguchi H.; Satoh K.; Tajima N.; Kato R.
Meeting abstracts of the Physical Society of Japan, Volume：59, Number：1, First page：825, Last page：825, 03 Mar. 2004
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002198378, CiNii Books ID：AA11439205 - Low-Temperature Heat Capacity of κ-(BEDT-TTF)_4Hg_<3-δ>X_8 (X=Br, Cl)
Naito A.; Nakazawa Y.; Oguni M.; Taniguchi H.; Kanoda K.; Saito K.; Sorai M.
Meeting abstracts of the Physical Society of Japan, Volume：58, Number：2, First page：731, Last page：731, 15 Aug. 2003
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002063662, CiNii Books ID：AA11439205 - Electrical Resistance in β'-(BEDT-TTF)_2BrICl under Extremely High Pressure
Kano M.; Kurita N.; Hedo M.; Uwatoko Y.; Uchiyama K.; Miyashita M.; Taniguchi H.; Satoh K.; Mori N.
Meeting abstracts of the Physical Society of Japan, Volume：58, Number：2, First page：737, Last page：737, 15 Aug. 2003
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002063702, CiNii Books ID：AA11439205 - Magnetoresistance measurements on β'-(BEDT-TTF)_2ICl_2
Kurita N.; Kano M.; Hedo M.; Uwatoko Y.; Tozor S. W.; Miyashita M.; Uchiyama K.; Taniguchi H.; Sato K.
Meeting abstracts of the Physical Society of Japan, Volume：58, Number：2, First page：736, Last page：736, 15 Aug. 2003
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002063700, CiNii Books ID：AA11439205 - Structural change of α'-(BEDT-TTF)_2BrICl at low temperature
Watanabe M.; Matsunaga A.; Noda Y.; Uchiyama K.; Taniguchi K.; Satoh K.
Meeting abstracts of the Physical Society of Japan, Volume：58, Number：2, First page：719, Last page：719, 15 Aug. 2003
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002063585, CiNii Books ID：AA11439205 - Pressure effect on (BEDT-TTF)_2MCl_4(M=Fe, Ga)
Namai Y.; Taniguchi H.; Satoh K.; Uwatoko Y.; Okamoto H.; Nakao A.; Tamura M.; Kato R.
Meeting abstracts of the Physical Society of Japan, Volume：58, Number：1, First page：799, Last page：799, 06 Mar. 2003
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002222639, CiNii Books ID：AA11439205 - Anisotropy and magnetic-field-dependence of susceptibility in κ-ET_4Hg_<3-δ>X_8(X=Br, Cl)
Nagai T.; Taniguchi H.; Satoh K.; Miyagawa K.; Kanoda K.
Meeting abstracts of the Physical Society of Japan, Volume：58, Number：1, First page：812, Last page：812, 06 Mar. 2003
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002222822, CiNii Books ID：AA11439205 - ^<13>C-NMR study of κ-(BEDT-TTF)_4Hg_<2.78>Cl_8;field dependence
Furuta A.; Miyagawa K.; Taniguchi H.; Kanoda K.
Meeting abstracts of the Physical Society of Japan, Volume：58, Number：1, First page：813, Last page：813, 06 Mar. 2003
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002222826, CiNii Books ID：AA11439205 - 31aZA-2 [Pd(dmit)_2] 塩の超高圧下電気抵抗測定
石井 康之; 辺土 正人; 上床 美也; 加藤 礼三; 田村 雅史; 谷口 弘三; 毛利 信男
Volume：58, Number：1, First page：819, Last page：819, 06 Mar. 2003
Japanese
ISSN：1342-8349, CiNii Articles ID：110002222933, CiNii Books ID：AA11439205 - Discovery of novel organic superconductor under extreme pressure : renewal of T_c-record of κ-phase salt
Taniguchi Hiromi
Meeting abstracts of the Physical Society of Japan, Volume：58, Number：1, First page：807, Last page：807, 06 Mar. 2003
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002222758, CiNii Books ID：AA11439205 - Development of AC susceptibility technique under high pressure and its application to organic conductor
Sato Y.; Nagai T.; Kurita A.; Miyashita M.; Taniguchi H.; Sato K.; Tamura M.; Kato R.; Hedo M.; Uwatoko Y.
Meeting abstracts of the Physical Society of Japan, Volume：58, Number：1, First page：811, Last page：811, 06 Mar. 2003
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002222795, CiNii Books ID：AA11439205 - Superconductivity induced by ultra high pressure in β-ET_2X II
Uchiyama K.; Miyashita M.; Tanaguchi H.; Satoh K.; Mori N.; Miyagawa K.; Kanoda K.; Hedo M.; Uwatoko Y.
Meeting abstracts of the Physical Society of Japan, Volume：58, Number：1, First page：810, Last page：810, 06 Mar. 2003
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002222780, CiNii Books ID：AA11439205 - Superconductivity induced by ultra high pressure in β-ET_2X I
Miyashita M.; Uchiyama K.; Taniguchi H.; Satoh K.; Mori N.; Okamoto H.; Miyagawa K.; Kanoda K.; Hedo M.; Uwatoko Y.
Meeting abstracts of the Physical Society of Japan, Volume：58, Number：1, First page：810, Last page：810, 06 Mar. 2003
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002222776, CiNii Books ID：AA11439205 - Organic Superconductor Induced by Extremely High Pressure
Taniguchi Hiromi; Miyashita Masashi; Hedo Masato; Uwadoko Yoshiya
Volume：58, Number：7, First page：533, Last page：536, 2003
We demonstrated that an organic charge-transfer complex, β'-(BEDT-TTF)_2ICl_2, which is a semiconductor with high resistivity, is metallized by application of extremely high pressure by means of a cubic anvil press. This metallization was accompanied with appearance of the highest-T_c superconductivity (T_c=14.2K at 8.2GPa) among the organic systems. We anticipate that many novel electronic phases including superconductivity will be uncovered in this extremely high pressure-range.
The Physical Society of Japan (JPS), Japanese
ISSN：0029-0181, CiNii Articles ID：110002069404, CiNii Books ID：AN00196952 - Fabrication of the high pressure sell using the Ni-Co-Cr-Mo alloy μSR study, and evaluation of its characteristic properties
Hanaoka A; Satoh K; Taniguchi H; Kosaka M; Mori N; Koda A; Higemoto W
Meeting abstracts of the Physical Society of Japan, Volume：57, Number：2, First page：444, Last page：444, 13 Aug. 2002
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009718608, CiNii Books ID：AA11439205 - Low-Temperature Heat Capacity of κ-(BEDT-TTF)4Hg3-〓X〓(X=Br,Cl) II
Naito A.; Nakazawa Y.; Saito K.; Taniguchi H.; Kanoda K.; Sorai M.
Meeting abstracts of the Physical Society of Japan, Volume：57, Number：2, First page：712, Last page：712, 13 Aug. 2002
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009719619, CiNii Books ID：AA11439205 - X-ray topographs with a white beam of organic superconductor crystals(BEDT-TTF compound)
Mizuno K; Fujiki F; Okamoto H; Miyashita M; Taniguchi H
Meeting abstracts of the Physical Society of Japan, Volume：57, Number：2, First page：819, Last page：819, 13 Aug. 2002
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009720021, CiNii Books ID：AA11439205 - 24aPS-82 High pressure and low temperature experiments using helium pressure transmitting medium II
ISHII Yasuyuki; KOSAKA Masashi; MORI Nobuo; TANIGUCHI Hiromi; UWATOKO Yoshiya; HEDO Masato
Meeting abstracts of the Physical Society of Japan, Volume：57, Number：1, First page：492, Last page：492, 01 Mar. 2002
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009772128, CiNii Books ID：AA11439205 - 26pXM-14 Low-Temperature Heat Capacity of κ-(BEDT-TTF)_4Hg_<2.89>Br_8 and κ-(BEDT-TTF)_4Hg_<2.78>Cl_8
Naito A.; Nakazawa Y.; Saito K.; Taniguchi H.; Kanoda K.; Sorai M.
Meeting abstracts of the Physical Society of Japan, Volume：57, Number：1, First page：796, Last page：796, 01 Mar. 2002
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009774288, CiNii Books ID：AA11439205 - 25pYG-9 Easy physical experiment of High-T superconductivity
Taniguchi H.
Meeting abstracts of the Physical Society of Japan, Volume：57, Number：1, First page：347, Last page：347, 01 Mar. 2002
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009770241, CiNii Books ID：AA11439205 - 24aXM-8 Transport properties of θ(BEDT-TTP)MZn(SCN), (MoRb,Cs) under ultra-high pressure
Miyashita M.; Taniguchi H.; Saitoh K; Hedo M.; Uwatoko Y.; Miyagawa K.; Kanoda K.
Meeting abstracts of the Physical Society of Japan, Volume：57, Number：1, First page：760, Last page：760, 01 Mar. 2002
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110009774167, CiNii Books ID：AA11439205 - 26pXM-8 Infrared Magneto-Optical Study on Metal - Insulator - SuperconductorTransition of κ-(d[2,2]-BEDT-TTF)_2Cu[N(CN)_2]Br
Kimura S; Nishi T; Takahashi T; Miyagawa K; Taniguchi H; Kanoda K
Meeting Abstracts of the Physical Society of Japan, Volume：57, Number：0, First page：794, Last page：794, 2002
The Physical Society of Japan, Japanese
ISSN：1342-8349, CiNii Articles ID：110009774282, CiNii Books ID：AA11439205 - ^<13>C-NMR study of κ-(BEDT-TTF)_4Hg_<2.78>Cl_8 under ultra low temperature
Furuta A.; Miyagawa K.; Taniguchi H.; Kawamoto A.; Kanoda Kaz.
Meeting abstracts of the Physical Society of Japan, Volume：56, Number：2, First page：705, Last page：705, 03 Sep. 2001
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002048047, CiNii Books ID：AA11439205 - Structure and Physical Properties of α-(BEDT-TTF)_2NH_4Hg(SeCN)_4
河本 充司; 山下 真人; 熊谷 健一; 中尾 朗子; 福田 豊; 鹿野 田一司; 谷口 弘三
Meeting abstracts of the Physical Society of Japan, Volume：56, Number：2, First page：677, Last page：677, 03 Sep. 2001
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002047725, CiNii Books ID：AA11439205 - 23pYG-4 Raman spectra of κ-(BEDT-TTF)_2Cu[N(CN)_2]Br and its deuterated analogues
Maksimuk M.; Yakushi K.; Taniguchi H.; Kanoda K.; Kawamoto A.
Meeting abstracts of the Physical Society of Japan, Volume：55, Number：2, First page：715, Last page：715, 10 Sep. 2000
The Physical Society of Japan (JPS), English
ISSN：1342-8349, CiNii Articles ID：110002149334, CiNii Books ID：AA11439205 - ^1H-NMR study of superconductor-insulator transition in к-(d[2,2]-ET)_2Cu[N(CN)_2]Br
Matsumoto M.; Miyagawa K.; Taniguchi H.; Kawamoto A.; Kanoda Kaz.
Meeting abstracts of the Physical Society of Japan, Volume：55, Number：2, First page：715, Last page：715, 10 Sep. 2000
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002149339, CiNii Books ID：AA11439205 - Mixed state of Q2D superconductor κ-(BEDT-TTF)_2Cu(NCS)_2 under magnetic fields parallel to conducting layers measured by NMR
Uchida K.; Miyagawa K.; Taniguchi H.; Kawamoto A.; Kanoda K.
Meeting abstracts of the Physical Society of Japan, Volume：55, Number：1, First page：553, Last page：553, 10 Mar. 2000
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110001914041, CiNii Books ID：AA11439205 - The transport properties of (DI-DCNQI)_2Ag under pressures
Itou T.; Taniguchi H.; Kanoda K.; Hiraki K.; Takahashi T.
Meeting abstracts of the Physical Society of Japan, Volume：55, Number：1, First page：737, Last page：737, 10 Mar. 2000
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110001916201, CiNii Books ID：AA11439205 - 24pR-2 Raman-active C=C vibrations of κ-(BEDT-TTF)_2Cu[N(CN)_2]Br and its deuterated analogues
Maksimuk M.; Yasushi K.; Taniguchi; Kanoda K.; Kawamoto A.
Meeting abstracts of the Physical Society of Japan, Volume：55, Number：1, First page：729, Last page：729, 10 Mar. 2000
The Physical Society of Japan (JPS), English
ISSN：1342-8349, CiNii Articles ID：110001916104, CiNii Books ID：AA11439205 - ^<13>C NMR Study on (BEDT-TTF)_4Hg_<2.78>Cl_8
Miyagawa K.; Taniguchi H.; Kawamoto A.; Fuse T.; Kanoda Kaz.
Meeting abstracts of the Physical Society of Japan, Volume：55, Number：1, First page：731, Last page：731, 10 Mar. 2000
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110001916128, CiNii Books ID：AA11439205 - 27aYP-7 Field-induced superconductor-insulator transition in organic conductor situated near the Mott transition
Taniguchi H; Kawamoto A; Kanoda K
Meeting abstracts of the Physical Society of Japan, Volume：54, Number：2, First page：577, Last page：577, 03 Sep. 1999
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002065919, CiNii Books ID：AA11439205 - 25aE-7 Transport property of θ-(BEDT-TTF)_2MZn(SCN)_4 (M=Rb, Cs)
Taniguchi H; Miyagawa K; Kanoda K
Meeting abstracts of the Physical Society of Japan, Volume：54, Number：2, First page：741, Last page：741, 03 Sep. 1999
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110001994167, CiNii Books ID：AA11439205 - Physical Properties of Partially Deuterated _K-(BEDT-TTF)_2Cu[N(CN)_2]】Br
KAWAMOTO A.; TANIGUCHI H.; KANODA K.
Meeting abstracts of the Physical Society of Japan, Volume：53, Number：2, First page：315, Last page：315, 05 Sep. 1998
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002056294, CiNii Books ID：AA11439205 - Vortex state of the ET-based organic superconductor
TANIGUCHI H.; NAKAZAWA Y.; KANODA Kaz
Meeting abstracts of the Physical Society of Japan, Volume：53, Number：1, First page：525, Last page：525, 10 Mar. 1998
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002206560, CiNii Books ID：AA11439205 - 8a-C-2 Search for the phase transition of vortices in ET-based organic superconductors
Taniguchi H.; Nakazawa Y.; Kanoda Kaz.
Meeting abstracts of the Physical Society of Japan, Volume：52, Number：2, First page：298, Last page：298, 16 Sep. 1997
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002060740, CiNii Books ID：AA11439205 - 28a-M-10 Vortex state in quasi-two-dimensional superconductor, α-(BEDT-TTF)_2NH_4(SCN)_4 : H-T phase diagram investigated by resitivitty and ac susceptibility measurements
Taniguchi Hiromi; Nakazawa Yasuhiro; Kanoda Kaz
Meeting abstracts of the Physical Society of Japan, Volume：52, Number：1, First page：563, Last page：563, 17 Mar. 1997
The Physical Society of Japan (JPS), Japanese
ISSN：1342-8349, CiNii Articles ID：110002136234, CiNii Books ID：AA11439205 - 3a-B-6 Characteristic superconducting transition of α-(BEDT-TTF)_2NH_4Hg(SCN)_4 IV
Taniguchi H.; Nakazawa Y.; Kanoda K.
Abstracts of the meeting of the Physical Society of Japan. Annual meeting, Volume：51, Number：2, First page：387, Last page：387, 15 Mar. 1996
The Physical Society of Japan (JPS), Japanese
CiNii Articles ID：110002143461, CiNii Books ID：AN10451127 - 30a-K-4 Characteristic superconducting transition of α-(BEDT-TTF)_2NH_4Hg(SCN)_4 III
Taniguchi H.; Sato H.; Nakazawa Y.; Kanoda K.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, Volume：1995, Number：2, First page：413, Last page：413, 12 Sep. 1995
The Physical Society of Japan (JPS), Japanese
CiNii Articles ID：110001982341, CiNii Books ID：AN10453836 - Characteristic superconducting transition of α-(BEDT-TTF)_2NH_4Hg(SCN)_4 II
Taniguchi H; Sato H; Nakazawa Y; Kanoda K
Abstracts of the meeting of the Physical Society of Japan. Annual meeting, Volume：50, Number：2, First page：432, Last page：432, 16 Mar. 1995
The Physical Society of Japan (JPS), Japanese
CiNii Articles ID：110002137435, CiNii Books ID：AN10451127 - 12a-D-4 Pressure Effect on the Superconductivity in Nb_3X_4 (X=S, Se, Te)
Taniguchi H.; Takanezawa T.; Kashimoto E.; Okamoto H.; Ishihara Y.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, Volume：1993, Number：3, First page：286, Last page：286, 20 Sep. 1993
The Physical Society of Japan (JPS), Japanese
CiNii Articles ID：110001996839, CiNii Books ID：AN10453836 - 31p-T-3 Specific heat of Nb_3Se_4 at low temperature
Ishihara Y.; Okamoto H.; Taniguchi H.
Abstracts of the meeting of the Physical Society of Japan. Annual meeting, Volume：48, Number：3, First page：352, Last page：352, 16 Mar. 1993
The Physical Society of Japan (JPS), Japanese
CiNii Articles ID：110002235156, CiNii Books ID：AN10451127
■ Research projects
- ３パルス型フェムト秒時間分解分光による電荷ガラス転移における動的不均一性の探索
01 Apr. 2022 - 31 Mar. 2025
Grant amount(Total)：17550000, Direct funding：13500000, Indirect funding：4050000
Grant number：22H01162 - ダイマーモット有機物質における反強磁性相図の完全解明と電子型誘電体研究の新戦略
01 Apr. 2021 - 31 Mar. 2024
Grant amount(Total)：4160000, Direct funding：3200000, Indirect funding：960000
Grant number：21K03438 - Study of strongly correlated organic conductors by muon spin rotation and relaxation method under low temperatures and high pressure
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 01 Apr. 2018 - 31 Mar. 2021
Satoh Kazuhiko; Taniguchi Hiromi; Higemoto Wataru; Kobayashi Takuya, Saitama University
Grant amount(Total)：4420000, Direct funding：3400000, Indirect funding：1020000
We developed a high-pressure cell based on NiCrAl alloy for muon spin relaxation and rotation (μSR) measurements under high pressures up to 1.5 GPa at J-PARC. First, we measured μSR on NiCrAl alloy and confirmed that the μSR spectra exhibited simple relaxation behavior and do not have temperature dependence below 150 K, which indicate that NiCrAl alloy is suitable for the lowtemperature and high-pressure μSR measurements as a material of the cylinder. Next, after inserting samples of organic antiferromagnet, β'-(BEDT-TTF)_2ICl_2 amounts to 1 g into the pressure cell, we performed μSR experiments and succeeded in detecting the μSR signal from the samples, which prove the availability of the newly developed pressure cell.
We also measured μSR on β'-(BEDSe-TTF)_2ICl and β'-(BEDSe-TTF)_2IBr_2, which are isostructural with β'-(BEDT-TTF)_2ICl_2, to get information on magnetic properties of β'-(BEDTTTF) _2ICl_2. Contrary to expectation, these materials did not exhibit muon spin rotation at low temperatures. We proposed that the muon sites of these materials are quite different from that of β'- (BEDT-TTF)_2ICl_2.
Grant number：18K03533 - Muon spin rotation studies on deuterated BEDT-TTF salts
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 01 Apr. 2016 - 31 Mar. 2019
Taniguchi Hiromi; Kobayashi Takuya, Saitama University
Grant amount(Total)：4550000, Direct funding：3500000, Indirect funding：1050000
We determined the spin structure of k-ET2Cu[N(CN)2]Cl at a zero magnetic field by means of detailed magnetization measurements. This achievement was not expected in our proposal. Furthermore, we determined the zero-field spin structure of k-(d8-ET)2Cu[N(CN)2]Br, which has been regarded as qualitatively the same magnet as k-ET2Cu[N(CN)2]Cl, and, surprisingly, found that these two materials have different zero-field spin structures. On the basis of these new findings, we performed zero-field mSR studies on six kinds of antiferromagnets that situated in the antiferromagnetic phase of k-ET system. We detected the discontinuous change of the ratio of internal fields at around k-(d8-ET)2Cu[N(CN)2]Br salt, which means the confirmation of the change of the zero-field spin structure from the microscopic viewpoint. We also obtained the finding that two muon sites are at the molecular layers and the other one site is at the anion layers.
Grant number：16K05433 - Study on hierarchical charge-spin-lattice dynamics of strongly correlated electrons in molecular conductors
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), 01 Apr. 2013 - 31 Mar. 2017
Sasaki Takahiko; TANIGUCHI Hiromi; ISHIHARA Sumio; LANG Michael; MÜLLER Jens, Tohoku University
Grant amount(Total)：18720000, Direct funding：14400000, Indirect funding：4320000
In this research, we investigated the characteristic non-linear electronic properties appearing in the strongly correlated electrons coupled with soft molecular lattice system in organic conductors possessing characteristic charge-spin-lattice multiple-degrees of freedom. We found that the novel charge-glass state existed around the charge-order insulating transition (electrons solid-liquid transition) in a molecular conductor. This charge glass state is the third electronic state, in addition to the electrons solid (insulator) and electrons liquid (metal), which indicates heterogeneously quenched solidification of electrons with quite slow time-scale of the electronic dynamics.
Grant number：25287080 - Studies of crystal growth of organic conductors by high-pressure electrochemical oxidation
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Challenging Exploratory Research, 01 Apr. 2012 - 31 Mar. 2015
TANIGUCHI Hiromi, Saitama University
Grant amount(Total)：3900000, Direct funding：3000000, Indirect funding：900000
We aimed the emergence of novel organic conductors and we tried to develop the method of high-pressure electrochemical synthesis. We succeded in synthesizing single crystals under pressures but obtained crystal were known phases. Therefore we did not obtain any evidence that the high pressure affected the crystal growth. However, we expected that this method could be applied to the system that had high solubility and novel crystal phase would appear.
Grant number：24654098 - Investigation on dynamics of organic conductors by cooperative use of pulsed neutron and muon
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 28 Apr. 2011 - 31 Mar. 2015
KAWAMURA Seiko; KATO Reizo; TANIGUCHI Hiromi; SATOH Kazuhiko, Japan Atomic Energy Agency
Grant amount(Total)：5200000, Direct funding：4000000, Indirect funding：1200000
In this research, we aimed to apply inelastic neutron scattering (INS) measurement to studies on dynamics in the organic conductors using a chopper spectrometer installed at J-PARC.
We succeeded observation of a full picture of the phonon spectrum in an organic conductor, beta'-(BEDT-TTF)2ICl2, by INS for the first time. It was found there that a low-energy optical mode is strongly coupled with the charge and spin degrees of freedom. We also tried direct observation of magnetic excitation in this material. However, we have not yet succeeded its observation because the magnetic intensity rapidly decreases due to the spin widely distributed on a molecule.
Grant number：23600012 - Study of highly correlated electron system by angle resolved thermoelectric power measurement, using Corbino disk-type temperature gradient
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Challenging Exploratory Research, 2009 - 2011
TANIGUCHI Hiromi, Saitama University
Grant amount(Total)：3370000, Direct funding：3100000, Indirect funding：270000
We aimed to develop the novel method that enable us to measure angle-resolved thermoelectric power quasi-continuously, motivated by the importance of electronic anisotropy in highly correlated electron system. At the beginning we applied this method to organic conductors. Moreover we tried to construct novel method of determining Fermi surface anisotropy, studying anomalous transport properties of metallic state near insulating phase and determining symmetry of superconductivity. Indeed we succeeded in observing angle-dependent thermoelectric power of organic materials, which reflect anisotropy of Fermi surface.
Grant number：21654048 - 有機導体の高圧下合成による分子配列制御と新物性の創生
2009 - 2010
Grant amount(Total)：5980000, Direct funding：4600000, Indirect funding：1380000
Grant number：21110505 - Study of magnetism of strongly correlated organic system by muon spin rotation and relaxation under high pressure
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 2008 - 2010
SATOH Kazuhiko; TANIGUCHI Hiromi; HIGEMOTO Wataru, Saitama University
Grant amount(Total)：4420000, Direct funding：3400000, Indirect funding：1020000
High-pressure muon spin rotation and relaxation experiments were carried out for antiferromagnetic organic insulator β'-(BEDT-TTF)_2ICl_2, which shows superconducting transition under high pressure, and found the muon precession signal under high pressure for organic conductor for the first time. Temperature and pressure dependence of precession frequency and precession amplitude suggest the existence of pressure-induced phase transition around 0.7GPa. We also carried out zero-field muon spin relaxation experiment for organic superconductor κ-(BEDT-TTF)_4Hg_<2.89>Br_8 and found that internal field is constant around the superconducting transition temperature.
Grant number：20540345 - Ultra-high-pressure studies on layered organic conductors involving selenium
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 2007 - 2008
TANIGUCHI Hiromi, Saitama University
Grant amount(Total)：4550000, Direct funding：3500000, Indirect funding：1050000
Grant number：19540360 - 先端超高圧技術を用いた特異な有機超伝導体の研究
2006 - 2007
Grant amount(Total)：4100000, Direct funding：4100000
Grant number：18028007 - 有機物質への10GPa級超高圧印加による新電子相の創生
2004 - 2006
Grant amount(Total)：25740000, Direct funding：19800000, Indirect funding：5940000
Grant number：16684009 - 有機物質における新規圧力誘起超伝導体の開発と超伝導発現機構の解明
2004 - 2005
Grant amount(Total)：4900000, Direct funding：4900000
Grant number：16038207 - 高圧・低温下におけるミュオンスピン回転・緩和法測定技術の開発
2003 - 2005
Grant amount(Total)：3800000, Direct funding：3800000
Grant number：15654044 - 層状有機物質における圧力、次元性、バンド充填率の制御による超伝導の研究
2001 - 2002
Grant amount(Total)：2100000, Direct funding：2100000
Grant number：13740203 - 擬2次元層状有機物質における超伝導の異方性と磁束状態
1998 - 1999
Grant amount(Total)：2400000, Direct funding：2400000
Grant number：97J03423 - -
Competitive research funding - -
Competitive research funding