Magnetoresistance of two-dimensional tight-binding electrons in a weak magnetic field

被引：0
|
作者：
Unal, B. [1 ]
Usta, K. [1 ]
Kabak, M. [1 ]
机构：
[1] Ankara Univ, Dept Engn Phys, TR-06100 Ankara, Turkey
来源：
PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 16期
关键词：
Magnetoresistance; Disorder; Magnetic field; ANDERSON LOCALIZATION; CONDUCTIVITY; METALS;
D O I：
10.1016/j.physb.2009.04.042
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We study the Anderson model on a two-dimensional square lattice with an applied weak magnetic field B which causes the hopping matrix elements to have Peierls phase factors. The recursion method is applied and B dependent conductivity sigma(B) is calculated from the Kubo formula for different system sizes N and degree of disorder W. For large W there is no appreciable change of U(B) with B, but its system size dependence is first an increasing and then a decreasing behavior. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：2364 / 2368
页数：5
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