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

页码：2364 / 2368

页数：5

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