分子導体における電荷の局在性と遍歴性の研究

2007 Fiscal Year Final Research Report Summary

• Project/Area Number: 15073223
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Institute for Molecular Science (2004-2007); Okazaki National Research Institutes (2003)
• Principal Investigator: 薬師 久弥 Institute for Molecular Science, 物質分子科学研究領域, 教授 (20011695)
• Co-Investigator(Kenkyū-buntansha): 山本 薫 分子科学研究所, 物質分子科学研究領域, 助教 (90321603) ; 中村 敏和 分子科学研究所, 物質分子科学研究領域, 准教授 (50245370) ; 古川 貢 分子科学研究所, 物質分子科学研究領域, 助教 (90342633) ; 秋田 素子 分子科学研究所, 分子集団研究系, 助手 (30370125)
• Project Period (FY): 2003 – 2007
• Keywords: 分子導体 / 電荷秩序 / 赤外・ラマン分光 / 振動分光 / 磁気共鳴 / 金属・絶縁体転移 / BEDT-TTF

Research Abstract

この研究では電荷秩序状態へ相転移する分子導体の相転移前後における電子状態(遍歴状態と局在状態)を赤外・ラマン分光法と磁気共鳴法を用いて解明することを目的としている。
(1) 振動分光法による研究
BEDT-TTFにおける電荷量と振動数の関係を精査し、ラマン活性なv_2モードと赤外活性なv_<27>モードについて新たな関係式を提唱した。これは振動分光法による研究の基礎となる重要な結果である。まず、バンド幅の異なる6種類のθ-(BEDT-TTF)_2Xを系統的に調べ、電荷秩序状態の配列様式を決定した。また、従来金属相と考えられてきた高伝導相はすでに不均化が発生しており、局在性の強い電子状態であることを明らかにした。β"-型BEDT-TTF塩を系統的に調べ、超伝導相に隣接する電子状態は振幅の小さな電荷秩序ゆらぎをもつ相である事を見出した。また、β-型のmeso-DMBEDT-TTF塩の圧力-温度相図を調べ、超伝導相に隣接するのは短距離秩序をもってゆらいでいる電荷秩序相である事を明らかにした。両方と超伝導相と電荷秩序相の関係を明らかにした重要な結果である。さらに、β"-(BEDT-TTF)(TCNQ)では高温の電荷秩序相が低温で融解するという異常な現象を見出した。
(2) 磁気共鳴法による研究
(TMTTF)_2Xの電荷秩序相転移を^<13>C-NMRならびに多周波ESR法によって研究した。まず、Type IIの塩(X=PF_6, AsF_6, SbF_6)と同様にType I(X=ReO4)およびType III(X=SCN)の塩でも電荷秩序相転移を起すことを明らかにした。とくに、PF_6塩の電荷秩序の振幅がρ〜0.14であることを明らかにし、さらに低温で発生するスピン・パイエルスそうではこの電荷密度波が解消することを明らかにすることができた。

Research Products

• [Journal Article] Possible One-dimensional Helical Conductor : Hexa-peri-hexabenzocoronene Nanotube (2008)
  • Author(s): T. Hara, K. Furukawa, T. Nakamura, Y. Yamamoto, A. Kosaka, W. Jin, T. Fukushima, T. Aida
  • Journal Title: J. Phys. Soc. Jpn 77 Pages: 034710
  • Peer Reviewed
• [Journal Article] Charge Disproportionation and Dynamics in □-(BEDT-TTP)_2CsZn(SCN)_4 (2008)
  • Author(s): R. Chiba, K. Hiraki, T. Takahashi, H. M. Yamamoto, T. Nakamura
  • Journal Title: Phys. Rev. R 77 Pages: 115113
  • Peer Reviewed
• [Journal Article] Anomalous Superconductivity phase of 1-D organic conductor (TMTTF)_2SbF_6 (2008)
  • Author(s): M. Itoi, C. Araki, M. Hedo, Y. Uwatoko, T. Nakamura
  • Journal Title: J. Phys. Soc. Jpn 77 Pages: 023701
  • Peer Reviewed
• [Journal Article] Supramolecular Insulating Networks Sheathing Conducting Nanowires based on Organic Radical Cation (2008)
  • Author(s): H. M. Yamamoto, Y. Kosaka, R. Maeda, J. Yamaura, A. Nakao, T. Nakamura, R. Kato
  • Journal Title: ACS Nano 2 Pages: 143-155
  • Peer Reviewed
• [Journal Article] Multi-frequency ESR studies on low-dimensional antiferromagnets, □-(BEDT-TTF)_2PF_6(THF)and□-(BEDT-TTF)_2PF_6 (2008)
  • Author(s): K. Maeda, T. Hara, Ko Furukawa, T. Nakamura
  • Journal Title: Bull. Chem. Soc. Jpn 81 Pages: 84-90
  • Peer Reviewed
• [Journal Article] Photoinduced melting of stripe-type charge order and metallic-domain formation in layered BEDT-TTF based salt (2007)
  • Author(s): S. Iwai, K. Yamamoto, A. Kashiwazaki, H. Nakaya, K. Yakushi, H. Okamoto, H. Mori, Y. Nishio
  • Journal Title: Phys. Rev. Lett 98 Pages: 09740
  • Peer Reviewed
• [Journal Article] Charge ordered state and frustration of the site-charges in (ET)_3Te_2I_6 and (BETS)_2Te_2I_6 (2007)
  • Author(s): T. Yamamoto, J. Eda, A. Nakao, R. Kato, K. Yakushi
  • Journal Title: Phys. Rev. B 75 Pages: 205132
  • Peer Reviewed
• [Journal Article] Two-phase coexistence in the monovalent-to-divalent phase transition in dineopentylbiferrocene-fluorotetracyanoquinodimethane, (npBifc-(F_1TCNQ)_3), charge-transfer salt (2007)
  • Author(s): M. Uruichi, Y. Yue, K. Yakushi, T. Mochida
  • Journal Title: J. Phys. Soc. Jpn. 76 Pages: 124707
  • Peer Reviewed
• [Journal Article] Syntheses and characterizations of acetylene-linked bisphenalenyl and metallic-like behavior in its charge-transfer complex (2007)
  • Author(s): T. Kubo, Y. Goto, M. Uruichi, K. Yakushi, M. Nakano, A. Fuyuhiro, Y. Morita, K. Nakasuji
  • Journal Title: Chem. Asian J 2 Pages: 1370-1379
  • Peer Reviewed
• [Journal Article] Effects of pressure and shear stress on the absorption spectra of thin films of pentacene (2007)
  • Author(s): I. Shirotani, J. Hayashi, K. Takeda, H. Kawamura, M. Inokuchi, K. Yakushi, H. Inokuchi
  • Journal Title: Mol. Cryst. Liq. Cryst 461 Pages: 111-122
  • Peer Reviewed
• [Journal Article] Charge Ordering in □-(BEDT-TTF)_2I_3 by synchrotron x-ray diffraction (2007)
  • Author(s): T. Kakiuchi, Y. Wakabayashi, H. Sawa, T. Takahashi, T. Nakamura
  • Journal Title: J. Phys. Soc. Jpn. 76 Pages: 113702
  • Peer Reviewed
• [Journal Article] Redistribution of Charge in the Proximity of the Spin-Peierls Transition : ^<13>C NMR Investigation of(TMTTF)_2PF_6 (2007)
  • Author(s): T. Nakamura, K. Furukawa, T. Hara
  • Journal Title: J. Phys. Soc. Jpn 76 Pages: 064715
  • Peer Reviewed
• [Journal Article] Pressure-Induced Superconductivity in Quasi-One-Dimensional Organic Conductor (TMTTF)_2AsF_6 (2007)
  • Author(s): M. Itoi, M. Kano, N. Kurita, M. Hedo, Y. Uwatoko, T. Nakamura
  • Journal Title: J. Phys. Soc. Jpn 76 Pages: 053703
  • Peer Reviewed
• [Journal Article] AF-like Ground State of Mn-DNA and Charge Transfer from Fe to Base-□-Band in Fe-DNA (2007)
  • Author(s): K. Mizoguchi, S. Tanaka, Masaya Ojima, S. Sano, M. Nagatori, H. Sakamoto, Y. Yonezawa, Y. Aoki, H. Sato, K. Furukawa, T. Nakamura
  • Journal Title: J. Phys. Soc. Jpn 76 Pages: 043801
  • Peer Reviewed
• [Journal Article] Redistribution of electronic charges in the spin-Peierls state in (TMTTF)_2AsF_6 observed by ^<13>C NMR (2006)
  • Author(s): S. Fujiyama
  • Journal Title: J. Phys. Soc. Jpn. 75 Pages: 014705
  • Peer Reviewed
• [Journal Article] ^<13>C NMR Analyses of Successive Charge-Ordering in (TMTTF)_2ReO_4 (2006)
  • Author(s): T. Nakamura
  • Journal Title: . Phys. Soc, Jpn 75 Pages: 013707
  • Peer Reviewed
• [Journal Article] Evaluation of charge transfer degree in the bis(ethylenethio)tetrathiafulvalene salts by Raman spectroscopy (2006)
  • Author(s): A. Kowalska, R. Wojciechowski, J. Ulanski, M. Mas-Torrent, E. Laukhina, C. Rovira, K. Yakushi
  • Journal Title: Synthetic Metal 156 Pages: 75-80
  • Peer Reviewed
• [Journal Article] Charge ordering state of β"-(ET)_3(HSO_4)and β"-(ET)_3(ClO_4)_2 by temperature-dependent infrared and Raman spectroscopy (2006)
  • Author(s): T. Yamamoto, M. Uruichi, K. Yakushi
  • Journal Title: Phys. Rev. B 73 Pages: 125116
  • Peer Reviewed
• [Journal Article] Charge ordering in organic conductors (2006)
  • Author(s): T. Takahashi, Y. Nogami, K. Yakushi
  • Journal Title: J. Phys. Soc. Jpn 75 Pages: 051008
  • Peer Reviewed
• [Journal Article] Shear stress effect on the absorption spectra of organic thin films under high pressure (2006)
  • Author(s): I. Shirotani, J. Hayashi, K. Takeda, H. Kawamura, M. Inokuchi, K. Yakushi
  • Journal Title: Mol. Cryst. Liq. Cryst. 455 Pages: 73-77
  • Peer Reviewed
• [Journal Article] Raman spectroscopic study of Bis(diphenylglyoximato)metal Complexes under high pressure (2006)
  • Author(s): K. Yabuuchi, D. Kawamura, M. Inokuchi, I. Shirotani, J. Hayashi, K. Yakushi, H. Kawamura, H. Inokuchi
  • Journal Title: Mol. Cryst. Liq. Cryst. 455 Pages: 81-85
  • Peer Reviewed
• [Journal Article] Shear stress effect on thin films of molecular crystals (2006)
  • Author(s): M. Inokuchi, Y. Sakka, K. Yabuuchi, I. Shirotani, J. Hayashi, K. Yakushi, H. Kawamura, H. Inokuchi
  • Journal Title: J. Low Temp. Phys. 143 Pages: 211-214
  • Peer Reviewed
• [Journal Article] Incoherent-coherent crossover behavior of electron on κ-(BEDT-TTF)_2X system, probed by ^<13>C-NMR and optical studies (2006)
  • Author(s): A. Kawamoto, Y. Honma, K. Kumagai, K. Yamamoto, K. Yakushi
  • Journal Title: J. Low Temp. Phys. 143 Pages: 519-522
  • Peer Reviewed
• [Journal Article] Phase separation in the monovalent-to-divalent phase transition of biferrocenium-(F_1TCNQ)_3 (2006)
  • Author(s): M. Uruichi, K. Yakushi, T. Mochida
  • Journal Title: J. Low Temp. Phys. 143 Pages: 655-658
  • Peer Reviewed
• [Journal Article] Unusual electronic state of layeredθ-(ET)_2X studied by Raman spectroscopy (2006)
  • Author(s): K. Yakushi, K. Suzuki, K. Yamamoto, T. Yamamoto, A. Kawamoto
  • Journal Title: J. Low Temp. Phys. 143 Pages: 659-662
  • Peer Reviewed
• [Journal Article] ^<13>C NMR Analyses of Successive Charge-Ordering in (TMTTF)_2Re0_4 (2006)
  • Author(s): T. Nakamura, K. Furukawa, T. Hara
  • Journal Title: J. Phys. Soc. Jpn. 75 Pages: 013707
  • Peer Reviewed
• [Journal Article] Redistribution of electronic charges in the spin-Peierls state in (TMTTF)_2AsF_6 observed by ^<13>C NMR (2006)
  • Author(s): S. Fujiyama, T. Nakamura
  • Journal Title: J. Phys. Soc. Jpn. 75 Pages: 014705
  • Peer Reviewed
• [Journal Article] A Glass Hook Allows Fishing of Hexa-peri-hexabenzocoronene Graphitic Nanotubes : Fabrication of a Macroscopic Fiber with an Anisotropic Electrical Conduction (2006)
  • Author(s): Y. Yamamoto, T. Fukushima, W. Jin, A. Kosaka, T. Hara, T. Nakamura, A. Saeki, S. Seki, S. Tagawa, T. Aida
  • Journal Title: Advanced Materials. 18 Pages: 1297-1300
  • Peer Reviewed
• [Journal Article] Charge and Anion Ordering in (TMTTF)_2X Quasi-One-Dimensional Conductors (2006)
  • Author(s): P. Monceau, F. Nad, J. M. Fabre, T. Nakamura
  • Journal Title: J. Low Temp. Phys. 142 Pages: 367-372
  • Peer Reviewed
• [Journal Article] Electron spin dynamics in (DMe-DCNQI)_2M(M=Li_<1-x>Cu_x(x<0.14), Ag) (2006)
  • Author(s): M. Hiraoka, H. Sakamoto, K. Mizoguchi, R. Kato, T. Kato, T. Nakamura, K. Furukawa, K. Hiraki, T. Takahashi, T. Yamamoto, H. Tajima
  • Journal Title: J. Low Temp. Phys. 142 Pages: 617-620
  • Peer Reviewed
• [Journal Article] EPR Study of the Electronic States of β'-(BEDT-TTF)(TCNQ) (2006)
  • Author(s): S. Konno, S. Kazama, M. Hiraoka, H. Sakamoto, K. Mizoguchi, H. Taniguchi, T. Nakamura, K. Furukawa
  • Journal Title: J. Low Temp. Phys. 142 Pages: 621-624
  • Peer Reviewed
• [Journal Article] Redistribution of Electronic Charge in (TMTTF)_2ReO_4 : ^<13>C NMR Investigation (2006)
  • Author(s): T. Nakamura, T. Hara, K. Furukawa
  • Journal Title: J. Low Temp. Phys. 142 Pages: 629-632
  • Peer Reviewed
• [Journal Article] Bond and charge density waves in the charge localized phase of (DI-DCNQI)_2Ag studied by single-crystal infrared and Raman spectra (2005)
  • Author(s): K. Yamamoto
  • Journal Title: Phys. Rev. B 71 Pages: 045118
  • Peer Reviewed
• [Journal Article] Influence of the cooling rate on low-temperature Raman and infrared-reflection spectra of partially deuterated κ-(BEDT-TTF)_2Cu[N(CN)_2]Br (2005)
  • Author(s): M. Maksimuk
  • Journal Title: Synthetic Metals 149 Pages: 13-18
  • Peer Reviewed
• [Journal Article] Infrared and Raman studies of the phase transition in the organic conductor (TTM-TTP)I_3 (2005)
  • Author(s): R. Swietlik
  • Journal Title: Synthetic Metals 150 Pages: 83-92
  • Peer Reviewed
• [Journal Article] Examination of the charge sensitive vibrational modes in ET molecule (2005)
  • Author(s): T. Yamamoto
  • Journal Title: J. Phys. Chem. B 109 Pages: 15226-15235
  • Peer Reviewed
• [Journal Article] The robust superconducting state in the low-quasiparticle-density organic metals β"-(BEDT-TTF)4([(H_3O)M(C_2O_4)_3]Y ; superconductivity due to proximity to a charge-ordered state (2005)
  • Author(s): A. F. Bangura
  • Journal Title: Phys. Rev. B 72 Pages: 014543
  • Peer Reviewed
• [Journal Article] Infrared and Raman studies of θ-(BEDT-TTF)_2CsZn(SCN)_4 : Comparison with the rapidly cooled state of θ-(BEDT-TTF)_2RbZn(SCN)_4 (2005)
  • Author(s): K. Suzuki
  • Journal Title: J. Phys. Soc・Jpn. 74 Pages: 2631-2639
  • Peer Reviewed
• [Journal Article] Synthesis, intermolecular interaction, and semiconductive behavior of a delocalized singlet biradical hydrocarbon (2005)
  • Author(s): T. Kubo
  • Journal Title: Angew. Chem. Int. Ed. 44 Pages: 6564-6568
  • Peer Reviewed
• [Journal Article] Optical studies of shear stress on thin films (2005)
  • Author(s): M. Inokuchi
  • Journal Title: Synthetic Metals 152 Pages: 421-424
  • Peer Reviewed
• [Journal Article] Deuteration Effect and Possible Origin of the Charge-Ordering Transition of(TMTTF)_2X (2005)
  • Author(s): K. Furukawa
  • Journal Title: J. Phys. Soc. Jpn. 74 Pages: 3288-3294
  • Peer Reviewed
• [Journal Article] The effect of deuteration on the transition into a charge ordered state of (TMTTF)_2X salts (2005)
  • Author(s): F. Nad
  • Journal Title: J. Phys. : Condens. Matter 17 Pages: L399-L406
  • Peer Reviewed
• [Journal Article] Infrared and Raman studies of TTM-TTP and TSM-TTP charge-transfer salts (2004)
  • Author(s): R. Swietlik, K. Yakushi, K. Yamamoto, T. Kawamoto, T. Mori
  • Journal Title: J. Mol Structure 704 Pages: 89-93
  • Peer Reviewed
• [Journal Article] Optical characterization of 2k_F bond-charge-density wave in quasi-one-dimensional 3/4-filled (EDO-TTF)_2X (X=PF_6, and AsF_6) (2004)
  • Author(s): O. Drozdova, K. Yakushi, K. Yamamoto, A, Ota, H. Yamochi, G. Saito, H. Tashiro, D. B. Tanner
  • Journal Title: Phys. Rev. B 70 Pages: 075107
  • Peer Reviewed
• [Journal Article] Infrared and Raman study of the phase transition of θ-(ET)_2Cu_2(CN)[N(CN)_2]_2 (2004)
  • Author(s): T. Yamamoto, K. Yakushi, Y. Shimizu, G. Saito
  • Journal Title: J. Phys. Soc. Jpn. 73 Pages: 2326-2332
  • Peer Reviewed
• [Journal Article] Infrared and Raman evidence for the charge-ordering in θ″-(BEDT-TTF)_3(ReO_4)_2 (2004)
  • Author(s): T. Yamamoto, M. Uruichi, K. Yakushi, J. Yamaura, H. Tajima
  • Journal Title: Phys、Rev. B 70 Pages: 125102
  • Peer Reviewed
• [Journal Article] Charge disproportionation in (TMTTF)_2SCN observed by ^<13>C NMR (2004)
  • Author(s): S. Fujiyama, T. Nakamura
  • Journal Title: Phys. Rev. B 70 Pages: 045102
  • Peer Reviewed
• [Journal Article] Sliding spin-density wave of (TMTSF)_2PF_6 studied with narrow-band noise (2004)
  • Author(s): T. Sekine, N. Satoh, M. Nakazawa, T. Nakamura
  • Journal Title: Phys. Rev. B 70 Pages: 214201
  • Peer Reviewed
• [Journal Article] Spectroscopic studies of charge-ordering system in organic conductors (2004)
  • Author(s): K. Yakushi, K. Yamamoto, R. Swietlik, R. Wojciechowski, K. Suzuki, T. Kawamoto, T. Mori, Y. Misaki, K. Tanaka
  • Journal Title: Macromolecular Symposia 212 Pages: 159-168
  • Peer Reviewed
• [Journal Article] Infrared and Raman studies of the charge ordering in the organic semiconductor к-[(Et)_4N](ET)_4Co(CN)_6・3H_2O (2004)
  • Author(s): R. Swietlik, L Ouahab, J. Guillevic, K. Yakushi
  • Journal Title: Macromolecular Symposia 212 Pages: 219-224
  • Peer Reviewed
• [Journal Article] Quantum chemical study of oxidation processes in metal-phthalocyanines (2004)
  • Author(s): P. Toman, S. Nespurek, K. Yakushi
  • Journal Title: Macromolecular Symposia 212 Pages: 327-334
  • Peer Reviewed
• [Journal Article] Phase transition in the organic conductor (TTM-TTP)I_3 studied by infrared and Raman spectroscopies (2004)
  • Author(s): R. Swietlik, K. Yakushi, K. Yamamoto, T. Kawamoto, T. Mori
  • Journal Title: J. Phys. (France) 114 Pages: 87-90
  • Peer Reviewed
• [Journal Article] Dynamical Fluctuation of the site-charge density in metallic β"-(BEDT-TTF)(TCNQ) (2004)
  • Author(s): K. Yakushi, M. Uruichi, H. M. Yamamoto, R. Kato
  • Journal Title: J. Phys. (France) 114 Pages: 149-151
  • Peer Reviewed
• [Journal Article] Electron-molecular vibration coupling effect on the Raman spectrum of organic charge-transfer salts (2004)
  • Author(s): K. Yamamoto, K. Yakushi
  • Journal Title: J. Phys. (France) 114 Pages: 153-155
  • Peer Reviewed
• [Journal Article] Charge-ordering in θ-(BEDT-TTF)_2MM'(SCN)_4[M=Cs, Rb, Tl, M'=Zn, Co] (2004)
  • Author(s): K. Suzuki, K. Yamamoto, K. Yakushi
  • Journal Title: J. Phys. (France) 114 Pages: 379-381
  • Peer Reviewed
• [Journal Article] Raman studies of the charge ordering and semiconductor-metal phase transition in polymorphic forms of (BEDT-TTF)_2Br_<1.3>I_<1.1>Cl_<0.6> (2004)
  • Author(s): R. Wojciechowski, A. Kowalska, J. Ulanski, M. Mas-Torrent, E. Laukhina, C. Rovira, V. Tkacheva, K. Yamamoto, K. Yakushi
  • Journal Title: J. Phys. (France) 114 Pages: 393-395
  • Peer Reviewed
• [Journal Article] Charge disproportionate state of BEDT-TTF β"-salts (2004)
  • Author(s): T. Yamamoto, M. Uruichi, K. Yakushi, J. Yamaura, H. Tajima, A. Kawamoto
  • Journal Title: J. Phys. (France) 114 Pages: 397-399
  • Peer Reviewed
• [Journal Article] Competition Electronic States of (TMTTF)_2MF_6 : ESR Investigations (2004)
  • Author(s): T. Nakamura, K. Maeda
  • Journal Title: J. Phys. IV France 114 Pages: 123-124
  • Peer Reviewed
• [Journal Article] Extremely Slow Charge Fluctuations in the Metallic State of the Two-Dimensional Molecular Conductor θ-(BEDT-TTF)_2RbZn(SCN)_4 (2004)
  • Author(s): R. Chiba
  • Journal Title: Phys. Rev. Lett. 93 Pages: 216405
  • Peer Reviewed
• [Journal Article] High-pressure Raman study of the charge ordering in α-(BEDT-TTF)_2I_3 (2003)
  • Author(s): R. Wojciechowski, K. Yamamoto, K. Yakushi, M. Inokuchi, A. Kawamoto
  • Journal Title: Phys. Rev. B 67 Pages: 224105
  • Peer Reviewed
• [Journal Article] Charge ordering in the κ-phase BEDT-TTF salts with CO(CN)_6 and Fe(CN)_6 anions studied by infrared and Raman spectroscopy (2003)
  • Author(s): R. Swietlik, A. Lapinski, L. Ouahab, K. Yakushi
  • Journal Title: C. R. Acad. Sci. (Paris) Chimie[Les Compte Rendus de l'Academie de Sciences (Pairs)] 3/6 Pages: 395-403
  • Peer Reviewed
• [Journal Article] Charge-ordering transition in two crystal modifications of θ-(BEDT-TTFR)_2TlZn (SCN)_4 studied by vibrational spectroscopy (2003)
  • Author(s): K. Suzuki, K. Yamamoto, K. Yakushi
  • Journal Title: Phys. Rev. B 69 Pages: 085114
  • Peer Reviewed
• [Journal Article] Possible Charge Ordering Patterns of the Paramagnetic Insulating States in (TMTTF)_2X (2003)
  • Author(s): T. Nakamura
  • Journal Title: J. Phys. Soc. Jpn. 72 Pages: 213-216
  • Peer Reviewed
• [Journal Article] Infrared study of the properties of the normal (metallic)phase of к-(ET-^<13>C_4)_2 Cu(CN)[N(CN)_2] (2003)
  • Author(s): O. Drozdova, K. Yakushi, H. Yamochi, G. Saito, D. B. Tanner
  • Journal Title: Synthetic Metals 133-134 Pages: 119-121
  • Peer Reviewed
• [Journal Article] Vibrational spectra of BEDT-・TTF based 2D charge ordering systems (2003)
  • Author(s): K. Yamamoto, K. Yakushi, K. Miyagawa, K. Kanoda, A. Kawamoto, J. Yamaura, T. Enoki
  • Journal Title: Synthetic Metals 133-134 Pages: 269-272
  • Peer Reviewed
• [Journal Article] Spectroscopic study of the [0110] charge ordering in (EDO-TTF)_2PF_6 (2003)
  • Author(s): O. Drozdova, K. Yakushi, A. Ota, H. Yamochi, G. Saito
  • Journal Title: Synthetic Metals 133-134 Pages: 277-279
  • Peer Reviewed
• [Journal Article] Charge ordering and phase transition in θ-(BDT-TTP)_2Cu(NCS)_2 (2003)
  • Author(s): K. Yakushi, K. Yamamoto, J. Ouyang, M. Simonyan, c. Nakano, Y. Misaki, K. Tanaka
  • Journal Title: Synthetic Metals 133-134 Pages: 287-289
  • Peer Reviewed
• [Journal Article] Characterization of quasi-ID conductors, (BDTFP)_2X(PhCl)_<0.5> (X=PF_6, AsF_6) (2003)
  • Author(s): M. Uruichi, K. Yakushi, T. Shirahata, K. Takahashi, T. Mori, T. Nakamura
  • Journal Title: Synthetic Metals 133-134 Pages: 407-409
  • Peer Reviewed
• [Journal Article] Insulator to metal transition and electronic spectra of bis(1, 2-benzoquinonedioximato)- platinum(II), Pt(bqd)_2 at high pressure (2003)
  • Author(s): K. Takeda, I. Shirotani, K. Yakushi
  • Journal Title: Synthetic Metals 133-134 Pages: 415-416
  • Peer Reviewed
• [Journal Article] Charge ordering in θ-(BEDT-TTF)_2TIM(SCN)_4(M=Co and Zn)studied by vibrational spectroscopy (2003)
  • Author(s): K. Suzuki, K. Yamamoto, K. Yakushi
  • Journal Title: Synthetic Metals 135-136 Pages: 525-526
  • Peer Reviewed
• [Journal Article] Charge distribution and molecular arrangement in (DI-DCNQI)_2Ag studied by high-pressure vibrational spectroscopy (2003)
  • Author(s): K. Yamamoto, K. Yakushi, K. Hiraki, T. Takahashi, K. Kanoda, M. Meneghetti, c. Pecile
  • Journal Title: Syntheti Metals c 135-136 Pages: 563-564
  • Peer Reviewed
• [Journal Article] Charge disproportionation in the charge-transfer salts of TTP (2003)
  • Author(s): K. Yakushi, R. Swietlik, K. Yamamoto, T. Kawamoto, T. Mori, Y. Misaki, K. Tanaka
  • Journal Title: Synthetic Metals 135-136 Pages: 583-585
  • Peer Reviewed
• [Journal Article] Raman study of charge disproportionation in α-(BEDT-TTF)_2I_3 (2003)
  • Author(s): R. Wojciechowski, K. Yamamoto, K. Yakushi, A. Kawamoto
  • Journal Title: Synthetic Metals 135-136 Pages: 587-588
  • Peer Reviewed
• [Journal Article] NMR Investigation of (TMTTF)_2X : Charge Configurations and Spin Dynamics (2003)
  • Author(s): S. Fujiyama, T. Nakamura
  • Journal Title: Synth. Met. 133-134 Pages: 67-68
  • Peer Reviewed
• [Journal Article] Temperature dependence millimeter wave ESR measurements of Et_2Me_2P[Pd(dmit)_2]_2 (2003)
  • Author(s): T. Sakurai, H. Ohta, S. Okubo, R. Kato, T. Nakamura
  • Journal Title: Synth. Met. 133-134 Pages: 421-422
  • Peer Reviewed
• [Journal Article] Magnetic Investigation of Itinerant and Local Hybrid Spins System, (CHTM-TTP)_2TCNQ (2003)
  • Author(s): T. Nakamura, M. Taniguchi, Y. Misaki, K. Tanaka, Y. Nogami
  • Journal Title: Synth. Met. 133-134 Pages: 441-442
  • Peer Reviewed
• [Journal Article] Crystal design of organic conductors using the iodine bond (2003)
  • Author(s): T. Imakubo, N. Tajima, T. Shirahata, A. Miyake, H. Sawa, T. Nakamura, H. Ohnuki, M. Tamura, R. Kato, M. Izumi, Y. Nishio, K. Kajita
  • Journal Title: Synth. Met. 135-136 Pages: 601-602
  • Peer Reviewed
• [Journal Article] ESR Investigation of Charge Localized States in (TMTTF)_2X (2003)
  • Author(s): T. Nakamura
  • Journal Title: Synth. Met. 137 Pages: 1181-1182
  • Peer Reviewed
• [Journal Article] ESR study of the charge ordering in (TMTTF)_2X (2003)
  • Author(s): T. Nakamura
  • Journal Title: Physica B 329-333 Pages: 1148-1149
  • Peer Reviewed
• [Presentation] ニトロスピロピランのずれ応力下でのフォトクロミズム (2008)
  • Author(s): 坂井 亮介, 目 泰成, 簸内 一博, 井口 眞, 薬師 久弥, 城谷 一民
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 立教大学
  • Year and Date: 2008-03-28
• [Presentation] [Pd(dmit)_2]塩における二量体内電荷分離現象の発見 (2008)
  • Author(s): 山本 貴, 加藤 礼三, 田村 雅史, 福永 武男, 薬師 久弥
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 立教大学
  • Year and Date: 2008-03-27
• [Presentation] 非対称型金-ジチオレン錯体を構成分子とする分子性導体の伝導挙動と電子状態(理研・科学技術振興機構) (2008)
  • Author(s): 久保 和也, 中尾 朗子, 石井 康之, 山本 貴, 田村 雅史, 加藤 礼三, 薬師 久翰, 松林 玄悦
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 立教大学
  • Year and Date: 2008-03-27
• [Presentation] □-(meso-DMeET)_2CF_3SO_3の室温非線形伝導(東大物性研) (2008)
  • Author(s): 吉兼 芙美子, 新関 彰一, 高橋 一志, 森 初果, 田中 雅之, 薬師 久弥
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 立教大学
  • Year and Date: 2008-03-27
• [Presentation] 赤外・ ラマン分光些による□-(BDA-TT)_2I_3の電子状態の研究 (2008)
  • Author(s): 売市 幹大, 田中 雅之, 中野 千賀子, 薬師 久弥, 改發 敬之, 山田 順一
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 立教大学
  • Year and Date: 2008-03-27
• [Presentation] SHG干渉顕微鏡による□-(BEDT-TTF)_2I_3の強誘電ドメイン観測(分子研) (2008)
  • Author(s): 山本 薫, Kowalska, Aneta, 中野 千賀子, 薬師 久弥
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 立教大学
  • Year and Date: 2008-03-27
• [Presentation] Ferroelectric charge ordering in (BEDT-TTF)_2X (X=I_2Br, IBr_2)studied by optical second-harmonic generation (2008)
  • Author(s): Kowalska, Aneta, 山本 薫, 中野 千賀子, 売市 幹夫, 薬師 久弥
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 立教大学
  • Year and Date: 2008-03-27
• [Presentation] β'-及びβ"-(BEDT-TTF)(TCNQ)のESR (2008)
  • Author(s): 加藤朝飛, 木原工, 溝口憲治, 坂本浩一, 今野信一, 風間重雄, 谷口弘三, 中村敏和, 古川貢
  • Organizer: 日本物理学会 第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-26
• [Presentation] ESRによるAlkali-TCNQの電子状態の研究III (2008)
  • Author(s): 藤田義人, 風間重雄, 溝口憲治, 坂本浩一, 中村敏和, 古川貢, 長谷川達生
  • Organizer: 日本物理学会 第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-26
• [Presentation] κ-(BEDT-TTF)2Cu[N(CN)]2Iの13C NMR (2008)
  • Author(s): 中村敏和, M. A. Tanatar, N. D. Kushch, E. B. Yagubskii
  • Organizer: 日本物理学会 第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-26
• [Presentation] (TMTTF)2X(X=SbF6, PF6)における高圧下磁場中電気抵抗測定 (2008)
  • Author(s): 狩野みか, 中村敏和, 糸井美穂, 上床美也
  • Organizer: 日本物理学会 第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-25
• [Presentation] SHG干渉顕微鏡による□-(BEDT-TTF)_2I_3の強誘電ドメイン観測 (2008)
  • Author(s): 山本 薫, Kowaslka Aneta, 中野千賀子, 薬師久弥
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-24
• [Presentation] (ET)_3(AuBr_2)_2(AuBr_4)_2における電荷不均化状態と金属的導電性 (2008)
  • Author(s): 坂田雅文, 前里光彦, 斉藤軍治, 山本 貴, 薬師久弥, S. S. Khasanov, NG. Spitsina, A. D. Dubrovskii, E. B. Yagubskii, P. Deplano, M. L. Mercuri
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-24
• [Presentation] α-(BETS)2I3の13C-NMR測定 (2008)
  • Author(s): 鷹野芳樹, 開康一, 山本浩史, 加藤礼三, 中村敏和, 高橋利宏
  • Organizer: 日本物理学会 第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-24
• [Presentation] θ-(BEDT-TTF)2CsZn(SCN)4の一軸圧縮下の電子状態 ; 13C-NMR測定IT (2008)
  • Author(s): 矢澤美穂, 千葉亮, 鷹野芳樹, 開康一, 山本浩史, 高橋利宏, 中村敏和
  • Organizer: 日本物理学会 第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-24
• [Presentation] 酸化物M3Fe4V6O24(M=Mn, Mg, Zn)の強磁場ESR (2008)
  • Author(s): 張衛民, 大久保晋, 太田仁, 中村敏和, C. Rudwicz, N. Guskos
  • Organizer: 日本物理学会 第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-23
• [Presentation] (TTF-Cly)Auxの電子状態 (2008)
  • Author(s): 坂本浩一, 溝口憲治, 中建介, 中村敏和, 古川貢
  • Organizer: 日本物理学会 第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-23
• [Presentation] 三本鎖磁性体Cu3(OH)4SO4の強磁場ESR (2008)
  • Author(s): 大久保晋, 山本祐司, 藤澤真士, 櫻井敬博, 太田仁, 菊池彦光, 中村敏和
  • Organizer: 日本物理学会 第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-23
• [Presentation] 磁気共鳴法による一次元電子系の低温電子状態研究 (2008)
  • Author(s): 中村敏和
  • Organizer: 特定領域研究「新しい環境下における分子性導体の特異な機能の探索」第8回シンポジウム
  • Place of Presentation: 東京工業大学デジタル多目的ホール
  • Year and Date: 2008-01-09
• [Presentation] Optical SHG in selected (BEDT-TTF)_2X crystals (2007)
  • Author(s): Aneta Kowalska, Kaoru Yamamoto, Kyuya Yakushi
  • Organizer: Seventh International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets ISCOM 2007)
  • Place of Presentation: CONGRESS PALACE OF PENISCOLA, Peniscola, Spain
  • Year and Date: 20070924-20070929
• [Presentation] Raman studies of magnetic charge-transfer salts of the organometallic comiplex Cp_2Mo(dmit) and various anions (2007)
  • Author(s): Roman Swietlik, Andrzej Lapinski, Marc Fourmigue, Kyuya Yakushi
  • Organizer: Seventh International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2007)
  • Place of Presentation: CONGRESS PALACE OF PENISCOLA, Peniscola, Spain
  • Year and Date: 20070924-20070929
• [Presentation] Charge fluctuations and charge ordering transition in the monoclinic k-phase salts formed by BEDT-TTF with Co(CN)_6 or Fe(CN)_6 trianions (2007)
  • Author(s): Roman Swietlik, Mikio Uruichi, KyuyaYakushi, Akira Ota, Lahcene Ouahab
  • Organizer: Seventh International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2007)
  • Place of Presentation: CONGRESS PALACE OF PENISCOLA, Peniscola, Spain
  • Year and Date: 20070924-20070929
• [Presentation] Raman studies of pressure-temperature phase diagram of □-(meso-DMBEDT-TTF)2PF6 involving charge-ordering and superconducting phases (2007)
  • Author(s): Masayuki Tanaka, Kaoru Yamamoto, Kyuya Yakushi, Shinya Kimura, Hatsumi Mori
  • Organizer: Seventh International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2007)
  • Place of Presentation: CONGRESS PALACE OF PENISCOLA, Peniscola, Spain
  • Year and Date: 20070924-20070929
• [Presentation] Coexistence of macroscopic two phases in the transition temperature width of 100-160 K in (npBifc)(TCNQ)_3 (2007)
  • Author(s): Mikio Uruichi, Kyuya Yakushi, Tomoyuki Mochida
  • Organizer: Seventh International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2007)
  • Place of Presentation: CONGRESS PALACE OF PENISCOLA, Peniscola, Spain
  • Year and Date: 20070924-20070929
• [Presentation] Optical observation of ferroelectric domains in a-(BEDT-TTF)_2I_3 by a two-beam interference microscope (2007)
  • Author(s): Kaoru Yamamoto, Aneta Kowalska, Kyuya Yakushi
  • Organizer: Seventh International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2007)
  • Place of Presentation: CONGRESS PALACE OF PENISCOLA, Peniscola, Spain
  • Year and Date: 20070924-20070929
• [Presentation] Instrumentation of the anisotropic extension fro the molecular crystals, and application to the organic superconductor (2007)
  • Author(s): Takashi Yaraamoto, Kenji Yamasawa, Ichiro Takahashi, Reizo Kato, Hiroshi Yamamoto, Atsuko Fukaya, Hiroki Akutsu, Akane-Sato Akutsu, Kyuya Yakushi, Peter Day
  • Organizer: Seventh International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2007)
  • Place of Presentation: CONGRESS PALACE OF PENISCOLA, Peniscola, Spain
  • Year and Date: 20070924-20070929
• [Presentation] Investigation of Charge and Spin Dynamics in (TMTTF)2MF6 in the Proximity of the Ground States (2007)
  • Author(s): Toshikazu Nakamura, Hidetaka Satsukawa, Ko Furukawa, Toshihiro Takahashi
  • Organizer: Seventh International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2007)
  • Place of Presentation: CONGRESS PALACE OF PENISCOLA, Peniscola, Spain
  • Year and Date: 20070924-20070929
• [Presentation] Electronic States in □'-(BEDT-TTF)(TCNQ) (2007)
  • Author(s): Asahi Kato, T. Kihara, K. Mizoguchi, H. Sakamoto, H. Taniguchi, S. Konno, K. Furukawa, T. Nakamura
  • Organizer: Seventh International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2007)
  • Place of Presentation: CONGRESS PALACE OF PENISCOLA, Peniscola, Spain
  • Year and Date: 20070924-20070929
• [Presentation] Peculiar Ground State of □"-(BEDT-TTF)-TCNQ revealed by ESR (2007)
  • Author(s): K. Mizoguchi, T. Kihara, A. Kato, H. Sakamoto, H. Taniguchi, K. Furukawa, T. Nakamura, H. M. Yamamoto, R. Kato
  • Organizer: Seventh International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2007)
  • Place of Presentation: CONGRESS PALACE OF PENISCOLA, Peniscola, Spain
  • Year and Date: 20070924-20070929
• [Presentation] The effect of uniaxial compression on the charge disproportionation in □-(BEDT-TTF)2CsZn(SCN)4 (2007)
  • Author(s): Miho Yazawa, Ryo Chiba, Yoshiki Takano, Ko-ichi Hiraki, Hiroshi M. Yamamoto, Toshihiro Takahashi, Toshikazu Nakamura
  • Organizer: Seventh International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2007)
  • Place of Presentation: CONGRESS PALACE OF PENI8C0LA, Peniscola, Spain
  • Year and Date: 20070924-20070929
• [Presentation] 磁気共鳴法による分子性固体の新電子相・新機能探索 (2007)
  • Author(s): 中村敏和
  • Organizer: 分子研研究会-先端的ESR手法による分子性物質の新機能性探索-
  • Place of Presentation: 岡崎コンファレンスセンター
  • Year and Date: 2007-12-19
• [Presentation] 低次元スピン系としての有機導体 (2007)
  • Author(s): 中村敏和
  • Organizer: 量予スピン系研究会-
  • Place of Presentation: 福井大学遠赤外領域開発研究センター
  • Year and Date: 2007-12-11
• [Presentation] Pulsed ESR and NMR Investigation of Charge and Spin Dynamics in One-dimensional Organic Conductors (2007)
  • Author(s): Toshikazu Nakamura
  • Organizer: Molecular Photoscience Research Center International Workshop -Low Energy excitations in Condensed Phases-
  • Place of Presentation: Kobe University, Kobe, Japan
  • Year and Date: 2007-11-13
• [Presentation] Pulsed-ESR Study of Spin Dynamics for Organic Conductor, (TMTTF)2PF6 (2007)
  • Author(s): Ko Furukawa, Toshikazu Nakamura
  • Organizer: A Joint Conference of the International Symposium on Electron Spin Science and the 46th Annual Meeting of the Society of Electron Spin Science and Technology (ISESS-SEST2007)
  • Place of Presentation: Shizuoka Convention & Arts Center "GRANSHIP", Shiazuoka, Japan
  • Year and Date: 2007-11-08
• [Presentation] パルスESRによるTMTTF系のスピンダイナミクス研究 (2007)
  • Author(s): 古川貢, 中村敏和
  • Organizer: 日本物理学会 第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-22
• [Presentation] ESRによる、Alkali-TCNQの電子状態の研究II (2007)
  • Author(s): 藤田義人, 風間重雄, 溝口憲治, 坂本浩一, 中村敏和, 古川貢, 長谷川達生
  • Organizer: 日本物理学会 第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
• [Presentation] バナジウム酸塩Mn3Fe4V6O24の強磁場ESR (2007)
  • Author(s): 張衛民, 大久保晋, 太田仁, 中村敏和, C. Rudwic, N. Guskos
  • Organizer: 日本物理学会 第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
• [Presentation] θ-(BEDT-TTF)2CsZn(SCN)4の一軸圧縮下の電子状態 ; 13C-NMR測定 (2007)
  • Author(s): 矢澤美穂, 千葉亮, 鷹野芳樹, 開康一, 山本浩史, 高橋利宏, 中村敏和
  • Organizer: 日本物理学会 第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
• [Presentation] 三本鎖磁性体Cu3(OH)4SO4の強磁場ESRと磁化測定 (2007)
  • Author(s): 山本祐司, 藤澤真士, 桜井敬博, 太田仁, 大久保晋, 菊池彦光, 中村敏和
  • Organizer: 日本物理学会 第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
• [Presentation] 有機導体TMTTF系のパルスESRによるスピンダイナミクス研究 (2007)
  • Author(s): 古川貢, 中村敏和
  • Organizer: 第1回分子科学討論会2007仙台
  • Place of Presentation: 東北大学川内北キャンパス
  • Year and Date: 2007-09-19
• [Presentation] 分子性導体□"-(C_5ET)_2ClO_4の誘電応答とその緩和時間 (2007)
  • Author(s): 河野謙太郎, 森初果, 山浦淳一, 田島裕之, 分子研売市幹大, 薬師久弥, 稲田太一, 寺崎一郎
  • Organizer: 第一回分子科学会
  • Place of Presentation: 東北大学川内北キャンパス
  • Year and Date: 2007-09-18
• [Presentation] スピロピランに対するずれ応力効果と光応答性 (2007)
  • Author(s): 井口眞, 目泰成, 坂井亮介, 簸内一博, 薬師久弥, 城谷一民
  • Organizer: 第一回分子科学会
  • Place of Presentation: 東北大学川内北キャンパス
  • Year and Date: 2007-09-18
• [Presentation] 光学第二高調波の位相差観測によるα-(BEDT-TTF)_2I_3の強誘電ドメイン構造 (2007)
  • Author(s): 山本薫, KOWALSKA Aneta, 薬師久弥
  • Organizer: 第一回分子科学会
  • Place of Presentation: 東北大学川内北キャンパス
  • Year and Date: 2007-09-18
• [Presentation] 一次元電子系(TMTTF)2Xの低温電子状態 : 最近の展開 (2007)
  • Author(s): 中村敏和, 薩川秀隆, 古川貢, 高橋利宏
  • Organizer: 第1回分子科学討論会2007仙台
  • Place of Presentation: 東北大学川内北キャンパス
  • Year and Date: 2007-09-17