Spin-dependent Coulomb interaction and quantum Hall effects in graphene

被引：3
|
作者：
Ezawa, Motohiko [1 ]
机构：
[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan
来源：
PHYSICA B-CONDENSED MATTER | 2008年 / 403卷 / 5-9期
关键词：
graphene; quantum Hall effect; effective Coulomb potential; spintronics;
D O I：
10.1016/j.physb.2007.10.193
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The quantum Hall system in graphene possesses a unique character that the intrinsic Zeeman energy is precisely one half of the cyclotron energy since electrons obey the Dirac equation. Consequently, a single energy level contains up-spin and down-spin electrons belonging to different Landau levels. Since Coulomb interactions are different for electrons in different Landau levels, a remarkable consequence is derived that the effective Coulomb potential depends on spins in each energy level. (C)2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1502 / 1504
页数：3
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