Specific heat study of massless Dirac fermion system α-(BEDT-TTF)2I3 under pressure

The specific heat of massless Dirac fermion system α‐(BEDT‐TTF)2I3 was measured under pressure. In low temperature, the temperature dependence of the specific heat is almost quadratic reflecting the massless Dirac dispersion. In magnetic field, the specific heat shows anomalous behavior which can be...

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Published inPhysica status solidi. C Vol. 9; no. 5; pp. 1177 - 1179
Main Authors Konoike, Takako, Uchida, Kazuhito, Osada, Toshihito
Format Journal Article
LanguageEnglish
Published Berlin WILEY-VCH Verlag 01.05.2012
WILEY‐VCH Verlag
Subjects
massless Dirac fermions
pressure
specific heat
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Summary:The specific heat of massless Dirac fermion system α‐(BEDT‐TTF)2I3 was measured under pressure. In low temperature, the temperature dependence of the specific heat is almost quadratic reflecting the massless Dirac dispersion. In magnetic field, the specific heat shows anomalous behavior which can be understood by assuming the existence of the zero‐mode Landau level characteristic of the Dirac fermions system and its spin splitting. These results are consistent with the reported magnetoresistance. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Bibliography:istex:963CC199E92464657D9F105AF5F6DAA4F8866936
ark:/67375/WNG-ZGMRFTWK-X
ArticleID:PSSC201100663
Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology (No. 21740247)
ISSN:1862-6351
1610-1642
DOI:10.1002/pssc.201100663