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Spin Density and Quantum Fluctuations in Quasi-One-Dimensional Conductors

Research Project

Project/Area Number 05640410
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 固体物性Ⅱ(磁性・金属・低温)
Research InstitutionNagoya University

Principal Investigator

SUZUMURA Yoshikazu  Nagoya University, Department of Physics, Associate Professor, 理学部, 助教授 (90108449)

Co-Investigator(Kenkyū-buntansha) YOSHIOKA Hideo  Nagoya University, Department of Physics, Assistant Professor, 理学部, 助手 (40252225)
大野 義章  名古屋大学, 理学部, 助手 (40221832)
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1993: ¥700,000 (Direct Cost: ¥700,000)
KeywordsQuasi-1D Conductor / Spin Density Wave / Collective Mode / Spin Fluctuation / Phase Hamiltonian / DCNQI-Cu / Strong Correlation / Metal-Insnlator Transition / 擬一次元有機導体 / DCNQI-Cu塩 / 強相関電子系 / アニオン格子 / 金属-絶縁体 / 運動量分布 / DCNQI塩 / 比熱 / 電荷密度波 / リエントラント
Research Abstract

The role of repulsive interaction in quasi-one-dimensional organic conductors has been studied in order to examine the fluctuation of spin density in low-dimensioanl electron system. Following three subjects have been investigated. (1) The fluctuation of the commensurate spin density wave (SDW) has been examined by calculating collective modes of a Hubbard model with a quarter-filled band. The longitudinal mode shows the gap and the coexistence of the 2k_F-SDW and the 4k_F-CDW.The effect of anion lattice was examined in terms of a phase Hamiltonian. (2) A role of interchain hopping in quasi-1D organic conductors was examined by applying the phase Hamiltonian based on the bosonization to two coupled chains with the repulsive interaction of backward and forward scatterings. The competition of SDW state and superconducting state explains the phase diagram of in the quasi-1D conductors. (3) The metal-insulatortarnsition in DCNQI-Cu salts was examined by applying the slave-boson mean-field theory to the periodic Anderson model with the electron-phonon (e-p) interaction. The fact that the M-I transition is the Peierls transition in the presence of the strong correlation has been shown by calculating the reentrant transition of M-I-M,the phase diagram specific heat and magnetic susceptibility, the dimensional effect and the antiferromagnetic state. Thus we have shown the mechanism of the M-I transition.

Report

(4 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (42 results)

All Other

All Publications (42 results)

  • [Publications] Y.Suzumura: "Strongly Correlated Electrons in Mixed-Valence Conductors DCNQI-Cu Salts" J.Phys.Soc.Jpn.62. 3244-3256 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 鈴村順三: "DCNQI-Cu塩の重い電子系" 固体物理. 28. 87-94 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 鈴村順三: "DCNQI-Cu塩の重い電子系-コメント(2)" 固体物理. 28. 452-452 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Ogawa: "Interplay of Charge Density and Spin Density in DCNQI-Cu Salts" J.Phys.Soc.Jpn.63. 1494-1501 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Ono: "Kondo Insulator and Charge Transfer Insulator in Lattice Anderson Model" J.Phys.Soc.Jpn.63. 1406-1421 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Suzumura: "Anisotropic Order Parameters for Two-Dimensional Strong Coupling Superconductors" Synthetic Metals. 71. 1635-1636 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Suzumura: "Metal-Insulator Transition in Organic Conductor DCNQI-Cu Salt" Synthetic Metals. 70. 1083-1084 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] H.Yoshioka: "Bosonization Approach to Two Chains Coupled by the Electron Hopping" Synthetic Metals. 71. 1967-1968 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Suzumura: "Strongly Correlated Electrons in Mixed-Valence Conductors DCNQI-Cu Salts" J.Phys.Soc.Jpn.62. 3244-3256 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 鈴村順三: "DCNQI-Cu塩の重い電子系" 固体物理. 28. 87-94 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 鈴村順三: "DCNQI-Cu塩の重い電子系-コメント(2)" 固体物理. 28. 452-452 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Ogawa: "Interplay of Charge Density and Spin Density in DCNQI-Cu Salts" J.Phys.Soc.Jpn.63. 1494-1501 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Ono: "Kondo Insulator and Charge Transfer Insulator in Lattice Anderson Model" J.Phys.Soc.Jpn.63. 1406-1421 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Suzumura: "Anisotropic Order Parameters for Two-Dimensional Strong Coupling Superconductors" Synthetic Metals. 71. 1635-1636 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Suzumura and Y.Ono: "Strongly Correlated Electrons in Mixed-Valence Conductors DCNQI-Cu Salts." J.Phys.Soc.Jpn.Vol.62. 3244-3256 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Suzumura: "Heavy Electrons in DCNQI-Cu Salts" Solid State Physics (Kotai Butsuri) (in Japanese). Vol.28. 87-94 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Suzumura: "Heavy Electrons in DCNQI-Cu Salts---comment (2)" Solid State Physics (Kotai Butsuri) (in Japanese). Vol.28. 452-452 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Ogawa and Y.Suzumura: "Interplay of Charge Density and Spin Density in DCNQI-Cu Salts" J.Phys.Soc.Jpn.Vol.63. 1494-1501 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Ono, T.Matsuura and Y.Kuroda: "Kondo Insulator and Charge Transfer Insulator in Lattice Anderson Model" J.Phys.Soc.Jpn.Vol.63. 1406-1421 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] H.Yoshioka and Y.Suzumura: "Two Coupled Chains of Tomonaga Model" J.Phys.Soc.Jpn.Vol.63. 4298-4301 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Ogawa and Y.Suzumura: "Theory of the Metal-Insulator Transition in Dicyanoquinonediimine Salts Mixed-Valence Organic Conductors" Phys.Rev.B. Vol.51. 10293-10300 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] N.Tanemura and Y.Suzumura: "Collective Modes and Magnetic Susceptibility of SDW State with One-Dimensional Half-filled Band" J.Phys.Soc.Jpn.Vol.64. 2158-2165 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] H.Yoshioka and Y.Suzumura: "Roles of Interchain Hopping in Two Coupled Chains of Tomonaga Model" J.Phys.Soc.Jpn.Vol.64. 3811-3825 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Suzumura and N.Tanemura: "Collective Modes of SDW with One-Dimensional Quarter-Filled Band" J.Phys.Soc.Jpn.Vol.64. 2298-2301 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Ogawa and Y.Suzumura: "Electronic Properties of Strongly Correlated States in Dicyanoquinonediimine-Cu Organic Conductors" Phy.Rev.B. Vol.53, No.12. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Suzumura and T.Matsuura: "Anisotropic Order Parameters for Two-Dimensional Strong Coupling Superconductors Proc.Int.Conf.on Science and Technology of Synthetic Metals, Seoul, Korea 1994" Synthetic Metals. Vol.71. 1635-1636 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Suzumura and T.Ogawa: "Metal-Insulator Transition in Organic Conductor DCNQI-Cu Salt Proc.Int.Conf.on Science and Technology of Synthetic Metals, Seoul, Korea 1994" Synthetic Metals. Vol.70. 1083-1084 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] H.Yoshioka and Y.Suzumura: "Bosonization Approach to Two Chains Coupled by the Electron Hopping Proc.Int.Conf.on Science and Technology of Synthetic Metals, Seoul, Korea 1994" Synthetic Metals. Vol.71. 1967-1968 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Ogawa: "Theory of the metal-insulator transition in dicyanoquinonediimine salt mixed-valence organic conductors" Phys.Rev.B. 51. 10293-10300 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] N.Tanemura: "Collective Mocles and Magnetic Susceptibility of SDW State with One-Dimensional Half-filled Band" J.Phys.Soc.Jpn.64. 2158-2165 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] H.Yoshioka: "Roles of Interchain Hopping in Two Coupled Chains of Tomonaga Model" J.Phys.Soc.Jpn.64. 3811-3825 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y.Suzumura: "Collective Uodes of SDW with One-Dimensional Quarter-Filled Banol" J.Phys.Soc.Jpn.64. 2298-2301 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Ogawa: "Electronic properties of strongly correlated stactes in dicyanoquinonediimine-Cu organic Conductors" Phys.Rev.B. 53(発表予定). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Ogawa: "Peierls Transition of Strongly Correlated DCNQI-Cu Salts" J.Phys.Soc.Jpn. 63. 2066-2069 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Y.Suzumura: "Metal-Insulator Transition in Organic Conductor DCNQI-Cu Salt" Synthetic Metals. (発表予定). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] H.Yoshioka: "Two Coupled Chains of Tomonaga Model" J.Pyhs.Soc.Jpn. 63. 4298-4301 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Ogawa: "Theory of the Metal-Insulator Transition in DCNQI salts Miyed-Valence Organic Conductors" Phys.Rev.B. 51(発表予定). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] Y.Ono: "Kondo Insulator and Charge Transfer Insulator in Lattice Anderson Model" J.Phys.Soc.Jpn. 63. 1406-1421 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Y.Suzumura: "Strongly Correlated Electrons in Mixed-Valence Conductors DCNQI-Cu Salts" J.Phys.Soc.Jpn.62. 3244-3256 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] H.Yoshioka: "Spin Magnetism in Mesoscopic Metals" J.Phys.Soc.Jpn.63. 405-408 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] T.Ogawa: "Interplay of Charge Density and Spin Density in DCNQI-Cu Salts" J.Phys.Soc.Jpn.63(発表予定). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] Y.Ono: "Kondo Insulator and Charge Transfer Insulator in Lattice Anderson Model" J.Phys.Soc.Jp. 63(発表予定). (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2020-05-15  

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