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Thermodynamic study of multilayer Dirac electron system

Research Project

Project/Area Number 21740247
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionThe University of Tokyo

Principal Investigator

KONOIKE Takako  東京大学, 物性研究所, 助教 (70447316)

Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords分子性固体 / 有機導体 / ディラック電子系 / 圧力 / 比熱測定 / 有機伝導体 / 比熱
Research Abstract

We have measured the specific heat of the organic conductor α-(BEDT-TTF)_2I_3 under pressure where the massless Dirac fermion system with linear energy dispersion is realized. In low temperature, the specific heat shows almost ∝T^2 dependence, and shows the peak and saturation in magnetic field. These behaviors are well understood by assuming the linear dispersion and N=0 Landau level characteristic of the Dirac fermion system. The results are also quite consistent with the reported magnetoresistance.

Report

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

    (13 results)

All 2012 2011 2010 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (8 results) Remarks (1 results)

  • [Journal Article] Specific heat study of massless Dirac fermion system α-(BEDT-TTF)2_I_3 under pressure2012

    • Author(s)
      Takako Konoike, Kazuhito Uchida, and Toshihito Osada
    • Journal Title

      Physica status solidi C

      Volume: Vol.9 Pages: 1177-1179

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Specific Heat of the Multilayered Massless Dirac Fermion System2012

    • Author(s)
      Takako Konoike, Kazuhito Uchida, and Toshihito Osada
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: Vol.81 Pages: 43601-43601

    • NAID

      210000109469

    • URL

      http://jpsj.ipap.jp/link?JPSJ/81/043601/

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Specific heat study of massless Dirac fermion system α-(BEDT-TTF)_2I_3 under pressure2012

    • Author(s)
      Takako Konoike, Kazuhito Uchida, Toshihito Osada
    • Journal Title

      Physica status solidi C

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Specific Heat of the Multilayered Massless Dirac Fermion System2012

    • Author(s)
      Takako Konoike, Kazuhito Uchida, Toshihito Osada
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 81

    • NAID

      210000109469

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Specific Heat Study of Massless Dirac Fermion System α-(BEDT-TTF)_2I_3 under Pressure2011

    • Author(s)
      Takako Konoike
    • Organizer
      The 9^<th> International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM2011)
    • Place of Presentation
      Collegium Europaeum Gnesnense (Gniezno, Poland)
    • Year and Date
      2011-09-26
    • Related Report
      2010 Final Research Report
  • [Presentation] Specific Heat Study of Massless Dirac Fermion System α-(BEDT-TTF)_2I_3 under Pressure2011

    • Author(s)
      Takako Konoike
    • Organizer
      The 9th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM 2011)
    • Place of Presentation
      Collegium Europaeum Gnesnense (Gniezno, Poland)
    • Year and Date
      2011-09-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] α-(BEDT-TTF)_2I_3 の圧力・磁場下比熱測定II2011

    • Author(s)
      鴻池貴子
    • Organizer
      日本物理学会
    • Place of Presentation
      富山大学
    • Year and Date
      2011-09-21
    • Related Report
      2010 Final Research Report
  • [Presentation] α-(BEDT-TTF)_2I_3の圧力・磁場下比熱測定II2011

    • Author(s)
      鴻池貴子
    • Organizer
      日本物理学会
    • Place of Presentation
      富山大学
    • Year and Date
      2011-09-21
    • Related Report
      2010 Annual Research Report
  • [Presentation] α-(BEDT-TTF)_2I_3 の圧力下比熱測定2010

    • Author(s)
      鴻池貴子
    • Organizer
      日本物理学会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-26
    • Related Report
      2010 Final Research Report
  • [Presentation] α-(BEDT-TTF)_2I_3の圧力下比熱測定2010

    • Author(s)
      鴻池貴子
    • Organizer
      日本物理学会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] Thermodynamic Study of α-(BEDT-TTF)_2I_3 Under Pressure2010

    • Author(s)
      Takako Konoike
    • Organizer
      International Conference on Science and Technology of Synthetic Metals (ICSM2010)
    • Place of Presentation
      京都国際会館
    • Year and Date
      2010-07-08
    • Related Report
      2010 Final Research Report
  • [Presentation] Thermodynamic Study of α-(BEDT-TTF)_2I_3 Under Pressure2010

    • Author(s)
      Takako Konoike
    • Organizer
      International Conference on Science and Technology of Synthetic Metals (ICSM 2010)
    • Place of Presentation
      京都国際会館
    • Year and Date
      2010-07-08
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://osada.issp.u-tokyo.ac.jp/

    • Related Report
      2010 Final Research Report

URL: 

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

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