特集：高圧力で拓くトポロジカル物質の新規物性
有機ディラック電子系における高圧力下熱測定
キーワード:
organic conductor,
clamp-type pressure cell,
Dirac fermion,
specific heat,
thermopower,
Seebeck effect,
Nernst effect
2020 年 30 巻 4 号 p. 274-280
詳細
2020 年 30 巻 4 号 p. 274-280
It is becoming evident that Dirac fermions are present in several materials other than graphene. The organic conductor α-(BEDT-TTF)2I3 is known to be a first bulk crystal which realizes a massless Dirac fermion system under high pressure. By taking advantage of its bulk nature, we experimentally study the thermodynamic and thermoelectric properties of Dirac fermions by using this system. Here, we will show the experimental technique and experimental results of the specific heat and thermopower of α-(BEDT-TTF)2I3 under high pressure.
