Transport Phenomena in Multilayered Massless Dirac Fermion System α-(BEDT-TTF)2I3

被引：7
|
作者：
Tajima, Naoya [1 ]
Nishio, Yutaka [1 ]
Kajita, Koji [1 ]
机构：
[1] Toho Univ, Dept Phys, Funabashi, Chiba 2748510, Japan
来源：
CRYSTALS | 2012年 / 2卷 / 02期
关键词：
Dirac fermion; transport phenomena; alpha-(BEDT-TTF)(2)I-3; inter-band effects of the magnetic field; zero-mode Landau level; v=0 quantum Hall effect;
D O I：
10.3390/cryst2020643
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
A zero-gap state with a Dirac cone type energy dispersion was discovered in an organic conductor alpha-(BEDT-TTF)(2)I-3 under high hydrostatic pressures. This is the first two-dimensional (2D) zero-gap state discovered in bulk crystals with a layered structure. In contrast to the case of graphene, the Dirac cone in this system is highly anisotropic. The present system, therefore, provides a new type of massless Dirac fermion system with anisotropic Fermi velocity. This system exhibits remarkable transport phenomena characteristic to electrons on the Dirac cone type energy structure.
引用
收藏
页码：643 / 661
页数：19
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