Theory of transport phenomena in organic conductor with Dirac fermion energy spectrum

• Project/Area Number: 24540370
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Kyoto University
• Principal Investigator: MORINARI Takao 京都大学, 人間・環境学研究科(研究院), 准教授 (70314284)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: ディラック電子 / 磁気抵抗 / 面間磁気抵抗 / カイラリティ / 有機導体

Outline of Final Research Achievements

Normally electrons is solids travel with a speed which is much less than the velocity of light. However, we need a relativistic equation of motion for the description of the electrons in an organic conductor alpha-(BEDT-TTF)2I3 under high pressure. The characteristic effect of the so-called Dirac fermions is observed in the transport phenomena under magnetic field. In this study we studied the transport phenomena under magnetic field in the organic conductor alpha-(BEDT-TTF)2I3 theoretically by including the interaction effect and obtained the results that are in good agreement with the experiments.

Research Products

• [Journal Article] Effect of Interlayer Spin-Flip Tunneling for Interlayer Magnetoresistance in Multilayer Massless Dirac Fermion Systems (2014)
  • Author(s): K. Kubo and T. Morinari
  • Journal Title: Journal of the Physical Society of Japan Volume: 83 Issue: 8 Pages: 083701-083701
  • DOI: 10.7566/jpsj.83.083701
  • NAID: 40020157874
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Spin Ordered States in Multilayer Massless Dirac Fermion Systems, (2014)
  • Author(s): K. Kubo and T. Morinari,
  • Journal Title: J. Phys. Soc. Japan Volume: 83 Issue: 3 Pages: 033702-033702
  • DOI: 10.7566/jpsj.83.033702
  • NAID: 40020017644
  • Peer Reviewed
• [Journal Article] Dirac Fermion State with Real Space π-Flux on Anisotropic Square Lattice and Triangular Lattice, (2014)
  • Author(s): K. Sasaki and T. Morinari,
  • Journal Title: J. Phys. Soc. Japan Volume: 83 Issue: 3 Pages: 034712-034712
  • DOI: 10.7566/jpsj.83.034712
  • NAID: 210000133010
  • Peer Reviewed
• [Journal Article] 分子性導体のディラック電子系における新物性の理論 (2014)
  • Author(s): 小林晃人，森成隆夫
  • Journal Title: 固体物理 Volume: 49 Pages: 95-105
  • Peer Reviewed
• [Journal Article] Algebraic structure of Dirac fermion state in ¥alpha-(BEDT-TTF) _2I_3 (2013)
  • Author(s): T. Morinari, Y. Suzumura
  • Journal Title: J. Phys. Soc. Jpn Volume: Vol. 82, No. 5 Issue: 5 Pages: 055002-055002
  • DOI: 10.7566/jpsj.82.055002
  • Peer Reviewed
• [Journal Article] Mechanism of Dirac Point in alpha Type Organic Conductor (2013)
  • Author(s): Y. Suzumura, T. Morinari and F. Piechon
  • Journal Title: J. Phys. Soc. Jpn. Volume: 82 Issue: 2 Pages: 023708-023708
  • DOI: 10.7566/jpsj.82.023708
  • Peer Reviewed
• [Presentation] Chirality effect on superconductivity (2015)
  • Author(s): T. Morinari
  • Organizer: 国際ワークショップ "Dirac Electrons in Solids"
  • Place of Presentation: 東京大学理学部小柴ホール
  • Year and Date: 2015-01-14 – 2015-01-15
• [Presentation] Effect of Interlayer Spin-flip Tunneling for Interlayer Magnetoresistance in Multilayer Dirac Fermion Systems (2015)
  • Author(s): K. Kubo and T. Morinari
  • Organizer: 国際ワークショップ "Dirac Electrons in Solids"
  • Place of Presentation: 東京大学理学部小柴ホール
  • Year and Date: 2015-01-14 – 2015-01-15
• [Presentation] Effect of Interlayer Spin-flip Tunneling for Interlayer Magnetoresistance in Multilayer Dirac Fermion Systems (2014)
  • Author(s): K. Kubo and T. Morinari
  • Organizer: International Workshop "Novel Quantum States in Condensed Matter 2014 (NQS2014)"
  • Place of Presentation: Yukawa Institute for Theoretical Physics
  • Year and Date: 2014-11-18
• [Presentation] 多層Dirac電子系における層間磁気抵抗へのスピン反転トンネリングの効果 (2014)
  • Author(s): 久保健治，森成隆夫
  • Organizer: 日本物理学（秋季大会）
  • Place of Presentation: 中部大学
  • Year and Date: 2014-09-07 – 2014-09-10
• [Presentation] 多層Dirac電子系におけるスピン秩序状態 (2014)
  • Author(s): 久保健治，森成隆夫
  • Organizer: 日本物理学会、東海大学
  • Place of Presentation: 東海大学
• [Presentation] π-フラックスを伴うディラック電子状態と有機導体への適用可能性 (2014)
  • Author(s): 佐々木和子，森成隆夫
  • Organizer: 日本物理学会、徳島大学
  • Place of Presentation: 徳島大学
• [Presentation] πフラックスを伴うディラック電子状態 (2013)
  • Author(s): 佐々木和子，森成隆夫
  • Organizer: 基研研究会「固体中におけるディラック電子系物理の新展開」
  • Place of Presentation: 京都大学
• [Presentation] 有機導体ディラック電子系における層間相互作用効果 (2013)
  • Author(s): 森成隆夫，久保健治
  • Organizer: 基盤研究A 「固体中のディラック電子」第3回ディラック電子研究会
  • Place of Presentation: 赤穂御崎温泉
• [Presentation] 分子性導体α-(BEDT-TTF)2I3のディラック電子状態における代数的構造 (2013)
  • Author(s): 森成隆夫
  • Organizer: 日本物理学会
  • Place of Presentation: 広島大学東広島キャンパス
• [Presentation] 有機導体ディラック電子系における試料端効果と磁気抵抗 (2012)
  • Author(s): 森成隆夫
  • Organizer: 日本物理学会
  • Place of Presentation: 横浜国立大学常盤台キャンパス
• [Book] 分子性導体のディラック電子系における新物性の理論 (2014)
  • Author(s): 小林晃人，森成隆夫
  • Total Pages: 12
  • Publisher: アグネ技術センター