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Theoretical study of origin of Dirac particle and Berry phase in organic conductor

Research Project

Project/Area Number 23540403
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionNagoya University

Principal Investigator

SUZUMURA Yoshikazu  名古屋大学, 理学(系)研究科(研究院), 名誉教授 (90108449)

Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsディラック電子 / 有機導体 / ディラック・コーン / ベリー位相 / ゼロギャップ / ディラック粒子 / ノード / ベリー曲率 / 傾斜ディラックコーン / ディラック電子対 / 静水圧 / 空間反転対称性 / ラッティンジャー・コーン表現 / ディラック対生成
Research Abstract

In organic conductor, electrons move in the crystal consisting of molecules where the metallic and insulating states are realized depending on the property of the energy band. Among them, zero-gap state in which electron behaves as the relativistic particle, has been found in an organic conductor. We examined such electron with an exotic band energy of Dirac cone using the quantum mechanics. We found that the phase (Berry phase) takes an important role to understand such topological property of Dirac electron. The origin has been studied in terms of the symmetry of the crystal and transfer energies which enable electrons to move between molecules. The property of Dirac cone has been elucidated through the close collaboration between experiment and theory.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (28 results)

All 2014 2013 2012 2011 Other

All Journal Article (14 results) (of which Peer Reviewed: 14 results) Presentation (13 results) Remarks (1 results)

  • [Journal Article] Effect of Tilting on the In-plane Conductivity of Dirac Electrons in Organic Conductor2014

    • Author(s)
      Y. Suzumura, I. Proskurin, M. Ogata
    • Journal Title

      J. Phys. Soc. Jpn

      Volume: Vol. 83, No. 2 Issue: 2 Pages: 023701-023701

    • DOI

      10.7566/jpsj.83.023701

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Inversion Symmetry and Wave-Function-Nodal-Lines of Dirac Electrons in Organic Conductor alpha-(BEDT-TTF)2I32013

    • Author(s)
      F. Piechon and Y. Suzumura
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82 Issue: 12 Pages: 123703-123703

    • DOI

      10.7566/jpsj.82.123703

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Algebraic structure of Dirac fermion state in ¥alpha-(BEDT-TTF) _2I_32013

    • 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

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effects of Zero Line and Ferrimagnetic Fluctuation on Nuclear Magnetic Resonance for Dirac Electrons in Molecular Conductor α-(BEDT-TTF)2I32013

    • Author(s)
      A. Kobayashi and Y. Suzumura
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82 Issue: 5 Pages: 54715-54715

    • DOI

      10.7566/jpsj.82.054715

    • NAID

      210000132562

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Zero-Gap State in α-(BEDT-TTF)2I3 under Hydrostatic Pressure2013

    • Author(s)
      Y. Suzumura and A. Kobayashi
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82 Issue: 4 Pages: 44709-44709

    • DOI

      10.7566/jpsj.82.044709

    • NAID

      210000132522

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Dirac Electron in Organic Conductor alpha-(BEDT-TTF)_2I_3 with Inversion Symmetry2013

    • Author(s)
      F. Piechon and Y. Suzumura
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82 Issue: 3 Pages: 033703-033703

    • DOI

      10.7566/jpsj.82.033703

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mechanism of Dirac Point in alpha Type Organic Conductor2013

    • 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

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Algebraic structure of Dirac fermion state in alpha-(BEDT-TTF)2I32013

    • Author(s)
      T. Morinari and Y. Suzumura
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theory of Dirac Electrons in Organic Conductors2012

    • Author(s)
      Y. Suzumura and A. Kobayashi
    • Journal Title

      Crystals

      Volume: 2(2) Issue: 2 Pages: 266-283

    • DOI

      10.3390/cryst2020266

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] New Plasmon and Filtering Effect in a Pair of Tilted-Dirac Cone2011

    • Author(s)
      T.Nishine, A.Kobayashi, Y.Suzumura
    • Journal Title

      Journal of Physical Society of Japan

      Volume: 80 Issue: 11 Pages: 114713-114713

    • DOI

      10.1143/jpsj.80.114713

    • NAID

      210000109279

    • Related Report
      2013 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] Berry Curvature of the Dirac Particle in alpha-(BEDT-TTF)2I32011

    • Author(s)
      Y.Suzumura, A.Kobayashi
    • Journal Title

      Journal of Physical Society of Japan

      Volume: 80 Issue: 10 Pages: 104701-104701

    • DOI

      10.1143/jpsj.80.104701

    • Related Report
      2013 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] Emergence of Dirac electron pair in the charge-ordered state of theorganic conductor -(BEDT-TTF)_2I_32011

    • Author(s)
      A. Kobayashi, Y. Suzumura, F. Piechon, and G. Montambaux
    • Journal Title

      Physical Review B

      Volume: 84 Issue: 7

    • DOI

      10.1103/physrevb.84.075450

    • Related Report
      2013 Final Research Report 2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] Zero-Gap State in Organic Conductor alpha-(BEDT-TTF)2NH4Hg(SCN)42011

    • Author(s)
      T.Choji, A.Kobayashi, Y.Suzumura
    • Journal Title

      J.Phys.Soc.Jpn.

      Volume: 80 Issue: 7 Pages: 074712-074712

    • DOI

      10.1143/jpsj.80.074712

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Zero-Gap State in Organic Conductor alpha-(BEDT-TTF)2NH4Hg(SCN)42011

    • Author(s)
      T. Choji, A. Kobayashi, and Y. Suzumura
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 80

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Presentation] 有機導体α-(BETS)2I3塩におけるディラック電子2014

    • Author(s)
      鈴村順三
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学湘南キャンパス
    • Year and Date
      2014-03-29
    • Related Report
      2013 Final Research Report
  • [Presentation] In-Plane Conductivity of Dirac Electrons in α -(BEDT-TTF) 2I3 Organic Conductor2014

    • Author(s)
      I. Proskurin
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学湘南キャンパス
    • Year and Date
      2014-03-29
    • Related Report
      2013 Final Research Report
  • [Presentation] 有機導体 α-(BETS)2I3塩におけるディラック電子2014

    • Author(s)
      鈴村順三
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学湘南キャンパス
    • Related Report
      2013 Annual Research Report
  • [Presentation] 有機導体α-(BEDT-TSeF)2I3塩における電子状態2013

    • Author(s)
      鈴村順三
    • Organizer
      日本物理学会
    • Place of Presentation
      徳島大学
    • Year and Date
      2013-09-26
    • Related Report
      2013 Annual Research Report 2013 Final Research Report
  • [Presentation] α型有機導体におけるディラック点2013

    • Author(s)
      鈴村順三
    • Organizer
      日本物理学会
    • Place of Presentation
      広島大学
    • Year and Date
      2013-03-25
    • Related Report
      2013 Final Research Report 2012 Research-status Report
  • [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
    • Year and Date
      2013-03-25
    • Related Report
      2013 Final Research Report 2012 Research-status Report
  • [Presentation] Novel aspects of Dirac electron in organic conductors2013

    • Author(s)
      Y. Suzumura
    • Organizer
      Int.Symposium on Crystaline Organic Materials, Superconductors and Magnets
    • Place of Presentation
      Delta centre-ville Hotel, Montreal, Canada
    • Related Report
      2013 Final Research Report
  • [Presentation] α型分子性導体における静水圧下でのディラック電子III2012

    • Author(s)
      鈴村順三
    • Organizer
      日本物理学会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-25
    • Related Report
      2013 Final Research Report 2011 Research-status Report
  • [Presentation] 分子性導体のディラック電子系における電子相関効果2012

    • Author(s)
      小林晃人
    • Organizer
      日本物理学会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-25
    • Related Report
      2013 Final Research Report
  • [Presentation] Exotic states of Dirac electrons in organic conductors2012

    • Author(s)
      Y. Suzumura
    • Organizer
      Int. School and Symposium on Multifunctional Molecule-based Materials
    • Place of Presentation
      Durham University, Durham, England
    • Related Report
      2013 Final Research Report
  • [Presentation] α型分子性導体における静水圧下でのディラック電子II2011

    • Author(s)
      鈴村順三
    • Organizer
      日本物理学会
    • Place of Presentation
      富山大学
    • Year and Date
      2011-09-21
    • Related Report
      2013 Final Research Report 2011 Research-status Report
  • [Presentation] 分子性導体α -(BEDT-TTF) _2I_3 の ゼロ ギャッ プ状態における 電子相関効果2011

    • Author(s)
      小林晃人
    • Organizer
      日本物理学会
    • Place of Presentation
      富山大学
    • Year and Date
      2011-09-21
    • Related Report
      2013 Final Research Report
  • [Presentation] Dirac electron in organic conductors2011

    • Author(s)
      Y. Suzumura
    • Organizer
      NQS2011(招待講演)
    • Place of Presentation
      Kyoto
    • Related Report
      2011 Research-status Report
  • [Remarks]

    • URL

      http://www.slab.phys.nagoya-u.ac.jp/suzumura/

    • Related Report
      2013 Final Research Report

URL: 

Published: 2011-08-05   Modified: 2020-05-15  

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