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Superconductivity mechanism of molecular conductors through control of the dimerization and frustration

Research Project

Project/Area Number 22540365
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics II
Research InstitutionNagoya University

Principal Investigator

ITO Hiroshi  名古屋大学, 工学研究科, 准教授 (10260374)

Co-Investigator(Kenkyū-buntansha) ONARI Seiichiro  名古屋大学, 大学院・工学研究科, 助教 (80402535)
Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords有機超伝導体 / 2量体化 / β型分子配列 / スピン揺らぎ / 三角格子 / フラストレーション / 一軸圧縮 / 2量体性 / 一軸性圧縮
Research Abstract

We study experimentally and theoretically the shift of the superconducting transition temperature (T_C) under uniaxial compression in β-type organic superconductors possessing unidirectional molecular stacks. Contrary to the BDA-TTP salts, BEDT-TTF salts shows T_C maximum in both compressions parallel and perpendicular to the molecular stack. T_C calculations are carried out on both the dimerized and nondimerized Hubbard models. We have found that the competition between the spin frustration and the effect induced by the fluctuation causes the nonmonotonic shift of T_C and that the behavior of T_C in BEDT-TTF salts with a stronger dimerization is well reproduced by the dimer model, while that in weakly dimerized BDA-TTP salts is rather well reproduced by the nondimerized model.

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (34 results)

All 2013 2012 2011 2010 Other

All Journal Article (13 results) (of which Peer Reviewed: 13 results) Presentation (20 results) Remarks (1 results)

  • [Journal Article] New BDH-TTP/[MIII(C5O5)3]3 (M = Fe, Ga) isostructural Molecular Metals2013

    • Author(s)
      L. Pilia et al.
    • Journal Title

      Inorg. Chem.

      Volume: 52 Issue: 1 Pages: 423-430

    • DOI

      10.1021/ic302234j

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Balanced Ambipolar Transport of the Composite Film of a Carbazole-Benzothiadiazole Copolymer with a Fullerene Derivative2013

    • Author(s)
      H. Ito, T. Iwata, S. Watanabe, and S. Kuroda
    • Journal Title

      Appl. Phys. Express

      Volume: 6 Issue: 5 Pages: 051601-051601

    • DOI

      10.7567/apex.6.051601

    • NAID

      10031174303

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Superconducting Pairing Symmetry on the Extended Hubbard Model in the Presence of the Rashba-Type Spin-Orbit Coupling2012

    • Author(s)
      重田啓介
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 82 Issue: 1 Pages: 014702-014702

    • DOI

      10.7566/jpsj.82.014702

    • NAID

      40019545404

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Symmetry of superconducting pairing state in a staggered field2012

    • Author(s)
      重田啓介
    • Journal Title

      Physical Review B

      Volume: 85 Issue: 22 Pages: 1-13

    • DOI

      10.1103/physrevb.85.224509

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Variable-Range Hopping Conduction in Ion-Gel-Gated Electrochemical Transistors of Regioregular Poly(3-hexylthiophene)2012

    • Author(s)
      Y. Ando, H. Ito, S. Watanabe, and S. Kuroda
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 37 Issue: 11 Pages: 1-4

    • DOI

      10.1143/jpsj.81.114721

    • NAID

      210000109801

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Competition of pairing symmetries and a mechanism for Berezinskii' s pairing in quasi-one-dimensional systems2011

    • Author(s)
      K.Shigeta, Y.Tanaka, K.Kuroki, S.Onari, H.Aizawa
    • Journal Title

      Physical Review B

      Volume: 83 Issue: 14 Pages: 1-4

    • DOI

      10.1103/physrevb.83.140509

    • Related Report
      2012 Final Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theory of the β-type organic superconductivity under uniaxial compression2011

    • Author(s)
      T. Suzuki, S. Onari, H. Ito, and Y. Tanaka
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 80 Issue: 9 Pages: 1-8

    • DOI

      10.1143/jpsj.80.094704

    • NAID

      40018996924

    • Related Report
      2012 Final Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Observation of field-induced charge carriers in high-mobility organic transistors of a thienothiophene-based small molecule: Electron spin resonance measurements2011

    • Author(s)
      H. Tanaka, M. Kozuka, S. Watanabe, H. Ito, Y. Shimoi, K. Takimiya, S. Kuroda
    • Journal Title

      Phys. Rev. B

      Volume: 84 Issue: 8

    • DOI

      10.1103/physrevb.84.081306

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quadrimolecular Recombination of Persistent Photocarriers in Surface-Type Photocells of Regioregular Poly(3-hexylthiophene)/Methanofullerene Composites2011

    • Author(s)
      H. Ito, Y. Nishikawa, J. Suzuki, A. Suzuki, S. Watanabe, H. Tanaka, H. Kishida, A. Nakamura, S. Kuroda
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 50 Issue: 9R Pages: 091602-091602

    • DOI

      10.1143/jjap.50.091602

    • NAID

      40019010376

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photoconductivity and FET performance of an n-type porphyrazine semiconductor, tetrakis(thiadiazole)porphyrazine2011

    • Author(s)
      Y.Miyoshi, T.Fujimoto, H.Yoshikawa, M.M.Matsushita, K.Awaga, T.Yamada, H.Ito
    • Journal Title

      Organic Electronics

      Volume: 12 Pages: 239-243

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Direct determination of interfacial molecular orientations in field-effect devices of P3HT/PCBM composites by electron spin resonance2011

    • Author(s)
      S.Watanabe, H.Tanaka, H.Ito, S.Kuroda, T.Mori, K.Marumoto, Y.Shimoi
    • Journal Title

      Organic Electronics

      Volume: 12 Pages: 716-723

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Superconductivity of β-Type Salts under Uniaxial Compression2010

    • Author(s)
      H. Ito, T. Ishihara, M. Niwa, T. Suzuki, S. Onari, Y. Tanaka, J. Yamada, H. Yamochi, and G. Saito
    • Journal Title

      Physica B

      Volume: 405 Issue: 11 Pages: S262-S264

    • DOI

      10.1016/j.physb.2009.12.073

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Superconductivity of β-Type Salts under Uniaxial Compression2010

    • Author(s)
      H.Ito, T.Ishihara, M.Niwa, T.Suzuki, S.Onari, Y.Tanaka, J.Yamada, H.Yamochi, G.Saito
    • Journal Title

      Physica B

      Volume: 405

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] イオンゲルトランジスタによるBEDT-TTF錯体単結晶へのキャリア注入2013

    • Author(s)
      井口聖悟,安藤良洋,伊東裕,黒田新一,平松孝章,吉田幸大,齋藤軍治
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Annual Research Report 2012 Final Research Report
  • [Presentation] 高移動度導電性高分子PBTTTイオンゲルトランジスタの可変領域ホッピング伝導2013

    • Author(s)
      伊東裕,安藤良洋,渡辺峻一郎,黒田新一
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学 (東広島市)
    • Related Report
      2012 Final Research Report
  • [Presentation] 高移動度導電性高分子PBTTTイオンゲルトランジスタの可変領域ホッピング伝導2013

    • Author(s)
      伊東裕, 安藤良洋, 渡辺峻一郎, 黒田新一
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] Pressure and field-effect control of (super)conducting properties of organic crystals and polymers2012

    • Author(s)
      H. Ito
    • Organizer
      International workshop on Multifunctional Molecular Materials Based on Triangular Lattice
    • Place of Presentation
      京都大学(京都市)
    • Year and Date
      2012-02-17
    • Related Report
      2012 Final Research Report
  • [Presentation] Pressure and field-effect control of (super)conducting properties of organic crystals and polymers2012

    • Author(s)
      H.Ito
    • Organizer
      International workshop on Multifunctional Molecular Materials Based on Triangular Lattice
    • Place of Presentation
      京都大学(京都府)
    • Year and Date
      2012-02-17
    • Related Report
      2011 Annual Research Report
  • [Presentation] Variable-Range Hopping Transport in Ion Gel-Gated Electrochemical Transistors of Regioregular Conjugated Polymers2012

    • Author(s)
      H. Ito, Y. Ando, S. Watanabe, H. Tanaka, and S. Kuroda
    • Organizer
      IUMRS-International Conference on Electronic Materials (IUMRS-ICEM 2012)
    • Place of Presentation
      横浜国際会議場 (横浜市)
    • Related Report
      2012 Final Research Report
  • [Presentation] 有機超伝導体 β-(ET)2IBr2の一軸性圧縮効果2012

    • Author(s)
      浅井貴行,伊東裕,田中久暁,黒田新一,鈴木丈夫,大成誠一郎,田仲由喜夫,平松孝章,齋藤軍治,矢持秀起
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学 (横浜市)
    • Related Report
      2012 Final Research Report
  • [Presentation] Variable-range hopping conduction behavior in ion gel-gated thin-film transistors of regioregular poly(3-hexylthiophene)2012

    • Author(s)
      H. Ito, Y. Ando, S. Watanabe, S. Kuroda
    • Organizer
      International Conference on Science and Technology of Synthetic Metals (ICSM 2012)
    • Place of Presentation
      Atlanta, USA
    • Related Report
      2012 Annual Research Report 2012 Final Research Report
  • [Presentation] Variable-Range Hopping Transport in Ion Gel-Gated Electrochemical Transistors of Regioregular Conjugated Polymers2012

    • Author(s)
      H. Ito, Y. Ando, S. Watanabe, H. Tanaka, and S. Kuroda
    • Organizer
      IUMRS-International Conference on Electronic Materials (IUMRS-ICEM 2012)
    • Place of Presentation
      Yokohama, Japan
    • Related Report
      2012 Annual Research Report
  • [Presentation] FET法によるPCDTBT/PCBM複合体の両極性伝導2012

    • Author(s)
      岩田峻典、鈴木淳也、伊東裕、田中久暁、黒田新一
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] 有機超伝導体β-(ET)2IBr2の一軸性圧縮効果2012

    • Author(s)
      浅井貴行,伊東裕,田中久暁,黒田新一,鈴木丈夫, 大成誠一郎,田仲由喜夫,平松 孝章,齋藤軍治,矢持秀起
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] Four-Probe Measurements on Field-Effect Transistors of High-Mobility Conjugated Polymers2011

    • Author(s)
      H.Ito, T.Nozaki, H.Tanaka, S.Kuroda
    • Organizer
      International Conference on Solid State Devices and Materials
    • Place of Presentation
      ウィンクあいち(愛知県)
    • Year and Date
      2011-09-28
    • Related Report
      2011 Annual Research Report
  • [Presentation] β型有機超伝導体の-軸性圧縮効果-圧縮方向依存性-2011

    • Author(s)
      伊東裕, 丹羽政文, 田中久暁, 黒田新一, 本杉友佳里, 鈴木丈夫, 大成誠一郎, 田仲由喜夫, 平松孝章, 矢持秀起, 齋藤軍治
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学(富山県)
    • Year and Date
      2011-09-21
    • Related Report
      2011 Annual Research Report
  • [Presentation] β型有機超伝導体の一軸性圧縮効果‐圧縮方向依存性‐2011

    • Author(s)
      伊東裕,丹羽政文,田中久暁,黒田新一,本杉友佳里,鈴木丈夫,大成誠一郎,田仲由喜夫,平松孝章,矢持秀起,齋藤軍治
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学 (富山市)
    • Related Report
      2012 Final Research Report
  • [Presentation] 拡張ハバードモデルにおけるβ型有機超伝導体の一軸性圧縮効果2010

    • Author(s)
      本杉由香里、鈴木丈夫、大成誠一郎、丹羽政文、伊東裕、田仲由喜夫
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学(大阪府)
    • Year and Date
      2010-09-23
    • Related Report
      2010 Annual Research Report
  • [Presentation] Uniaxial Compression effect on the Superconductivity of β-(BEDT-TTF)_2I_32010

    • Author(s)
      M.Niwa, H.Ito, T.Suzuki, Y.Motosugi, S.Onari, Y.Tanaka, T.Hiramatsu, H.Yamochi, G.Saito
    • Organizer
      ICSM 2010
    • Place of Presentation
      京都国際会議場(京都府)
    • Year and Date
      2010-07-05
    • Related Report
      2010 Annual Research Report
  • [Presentation] Uniaxial Pressure Effect on Organic Superconductors in the Extended Hubbard Model2010

    • Author(s)
      Y.Motosugi, T.Suzuki, S.Onari, M.Niwa, T.Ishihara, H.Ito, Y.Tanaka
    • Organizer
      ICSM 2010
    • Place of Presentation
      京都国際会議場(京都府)
    • Year and Date
      2010-07-05
    • Related Report
      2010 Annual Research Report
  • [Presentation] 拡張ハバードモデルにおけるβ型有機超伝導体の一軸性圧縮効果2010

    • Author(s)
      本杉由香里,鈴木丈夫,大成誠一郎,丹羽政文,伊東裕,田仲由喜夫
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学 (堺市)
    • Related Report
      2012 Final Research Report
  • [Presentation] Uniaxial Compression effect on the Superconductivity of .-(BEDT-TTF)_2I_32010

    • Author(s)
      M. Niwa, H. Ito, T. Suzuki, Y. Motosugi, S. Onari, Y. Tanaka, T. Hiramatsu, H. Yamochi, and G. Saito
    • Organizer
      Inter- national Conference on Science and Technology of Synthetic Metals (ICSM 2010)Inter- national Conference on Science and Technology of Synthetic Metals (ICSM 2010)
    • Place of Presentation
      京都国際会議場 (京都市)
    • Related Report
      2012 Final Research Report
  • [Presentation] Uniaxial Pressure Effect on Organic Superconductors in the Extended Hubbard Model2010

    • Author(s)
      Y. Motosugi, T. Suzuki, S. Onari, M. Niwa, T. Ishihara, H. Ito, and Y. Tanaka
    • Organizer
      International Conference on Science and Technology of Synthetic Metals (ICSM 2010)
    • Place of Presentation
      京都国際会議場 (京都市)
    • Related Report
      2012 Final Research Report
  • [Remarks]

    • URL

      http://www.nuap.nagoya-u.ac.jp/~kurodalab/ito.html

    • Related Report
      2012 Final Research Report

URL: 

Published: 2010-11-30   Modified: 2020-05-15  

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