Numerical study of quantum Hall effect in two-dimensional multi-band system: Single- and multi-layer graphene

被引：3
|
作者：
Arai, Masao [1 ]
Hatsugai, Yasuhiro [2 ]
机构：
[1] Natl Inst Mat Sci, Computat Mat Sci Ctr, Tsukuba, Ibaraki 3050044, Japan
[2] Univ Tsukuba, Dept Phys, Tsukuba, Ibaraki 3058571, Japan
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2010年 / 42卷 / 04期
基金：
日本学术振兴会;
关键词：
Graphene; Quantum Hall effect; EDGE STATES; TOPOLOGICAL INVARIANT; CHERN NUMBERS; BERRYS PHASE; CONDUCTANCE;
D O I：
10.1016/j.physe.2009.11.005
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The Chem numbers which correspond to quantized Hall conductance sigma(xy) were calculated for single- and bi-layer honeycomb lattices. The quantization of sigma(xy) occurs in entire energy range. Several large jumps of Chem numbers appear at van-Hove singularities of energy bands without magnetic fields. The plateaux of sigma(xy) are discussed from semi-classical quantization. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：740 / 743
页数：4
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