Abstract
AbstractThe 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)
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