• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Theory of Dirac fermion magnetoresistance in organic conductor

Research Project

Project/Area Number 21740252
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionKyoto University

Principal Investigator

MORINARI Takao  京都大学, 基礎物理学研究所, 助教 (70314284)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords分子性固体 / 有機導体 / ディラック電子 / 磁気抵抗 / 圧力効果 / 面間磁気抵抗 / ランダウ準位
Research Abstract

Fundamental research on electronic properties of various systems provides us the key for the development of modern technology. In this research project, we have studied an organic compound,α-(BEDT-TTF)_2I_3, where electrons obey the relativistic Dirac equation under pressure in spite of the fact that the velocity of electrons is much slower than the speed of light. We have formulated the theory describing the electronic transport properties of this system under magnetic field, and have explained anomalous temperature and magnetic field dependence of the resistivity.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (17 results)

All 2011 2010 2009

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (7 results)

  • [Journal Article] Pressure effects on Dirac fermions inα-(BEDT-TTF) 2I32011

    • Author(s)
      T. Himura, T. Morinari, and T. Tohyama and T. Tohyama
    • Journal Title

      J. Phys Condens

      Volume: 23 Issue: 46 Pages: 1-18

    • DOI

      10.1088/0953-8984/23/46/464202

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Theory of inplane magnetoresistance in two-dimensional massless Dirac fermion system2010

    • Author(s)
      T. Morinari and T. Tohyama
    • Journal Title

      Phys. Rev. B

      Volume: 82 Issue: 16

    • DOI

      10.1103/physrevb.82.165117

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Crossover from Positive to Negative Interlayer Magnetoresistance in Multilayer Massless Dirac Fermion System with Non-Vertical Interlayer Tunneling2010

    • Author(s)
      T. Morinari and T. Tohyama
    • Journal Title

      J. Phys. Soc. Jpn

      Volume: 79 Issue: 4 Pages: 044708-044708

    • DOI

      10.1143/jpsj.79.044708

    • NAID

      40017072121

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Dirac fermions inα-(BEDT-TTF) 2I3 : some topological propertie2010

    • Author(s)
      T. Morinari
    • Journal Title

      Physica

      Volume: B 405 Issue: 11 Pages: 192-194

    • DOI

      10.1016/j.physb.2009.11.094

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Pressure dependence of interlayer magnetoresistance inα-(BEDT-TTF) 2I32010

    • Author(s)
      T. Himura, T. Morinari, and T. Tohyama
    • Journal Title

      Physica

      Volume: B 405 Issue: 11 Pages: 157-159

    • DOI

      10.1016/j.physb.2009.12.083

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Interlayer magnetoresistance theory for layered Dirac fermion systems : Application toα-(BEDT-TTF) 2I32010

    • Author(s)
      T. Morinari, T. Himura, and T. Tohyama
    • Journal Title

      Physica

      Volume: E 42 Issue: 4 Pages: 763-766

    • DOI

      10.1016/j.physe.2009.11.071

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Theory of in-plane magnetoresistance in two-dimensional massless Dirac fermion system2010

    • Author(s)
      Takao Morinari, Takami Tohyama
    • Journal Title

      Physical Review B

      Volume: 82

    • NAID

      120002661512

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dirac fermions in alpha-(BEDT-TTF)(2)I-3 : Some topological properties2010

    • Author(s)
      Takao Morinari
    • Journal Title

      Physica B

      Volume: 405

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pressure dependence of interlayer magnetoresistance in alpha-(BEDT-TTF)(2)I-32010

    • Author(s)
      Takahiro Himura, Takao Morinari, Takami Tohyama
    • Journal Title

      Physica B

      Volume: 405

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Interlayer magnetoresistance theory for layered Dirac fermion systems : Application to α-(BEDT-TTF)_2I_32010

    • Author(s)
      T.Morinari, T.Himura, T.Tohyama
    • Journal Title

      Physica E 42

      Pages: 763-766

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] Magnetoresistance in organic Dirac fermion system2011

    • Author(s)
      T. Morinari
    • Organizer
      Workshop on Dirac Electron Systems 2011
    • Place of Presentation
      National Institute for Materials Science
    • Year and Date
      2011-01-19
    • Related Report
      2011 Final Research Report
  • [Presentation] Magnetoresistance in organic Dirac fermion system2011

    • Author(s)
      Takao Morinari
    • Organizer
      Workshop on Dirac Electron Systems in Tsukuba 2011
    • Place of Presentation
      物質材料機構(つくば市)
    • Year and Date
      2011-01-19
    • Related Report
      2010 Annual Research Report
  • [Presentation] α-(BEDT-TTF) 2I3のDirac電子相における磁気抵抗理論2010

    • Author(s)
      森成隆夫
    • Organizer
      α-(ET) 2I3のDirac電子相、電化不均化金属相、電荷秩序絶縁層に関する討論会
    • Place of Presentation
      東京大学
    • Year and Date
      2010-10-22
    • Related Report
      2011 Final Research Report
  • [Presentation] 有機ゼロギャップ半導体における面間磁気抵抗理論2009

    • Author(s)
      森成隆夫
    • Organizer
      ディラック電子系の物性-グラフェンおよび関連物質の最近の研究
    • Place of Presentation
      東京大学物性研究所
    • Year and Date
      2009-10-23
    • Related Report
      2009 Annual Research Report
  • [Presentation] Theory for interlayer magnetoresistance in layered Dirac fermion systems : Application toα-(BEDT-TTF) 2I32009

    • Author(s)
      T. Morinari
    • Organizer
      The 18th International Conference on Electronic Properties of Two-Dimensional Systems
    • Place of Presentation
      Kobe International Conference Center
    • Year and Date
      2009-07-20
    • Related Report
      2011 Final Research Report
  • [Presentation] α-(BEDT-TTF) 2I3の面間輸送現象2009

    • Author(s)
      森成隆夫
    • Place of Presentation
      京都大学
    • Year and Date
      2009-07-02
    • Related Report
      2011 Final Research Report
  • [Presentation] Tilted Dirac Cone Effect on Interlayer Magnetoresistance in癘(BEDT-TTF) 2I32009

    • Author(s)
      T. Morinari
    • Organizer
      The 8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets(ISCOM2009)
    • Place of Presentation
      Niseko Hokkaido
    • Related Report
      2011 Final Research Report

URL: 

Published: 2009-04-01   Modified: 2020-05-15  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi