Coulomb effects at the metal-insulator transition of disordered electrons

被引：2

作者：

Si, QM ^{[1
]}

Varma, CM

机构：

[1] Rice Univ, Dept Phys, Houston, TX 77251 USA

[2] AT&T Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

来源：

PHYSICA B-CONDENSED MATTER | 1999年 / 259-61卷

基金：

美国国家科学基金会;

关键词：

Coulomb effect; metal-insulator transition; disordered electrons;

D O I：

10.1016/S0921-4526(98)01117-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

At low enough density, the screening length of a disordered interacting electron gas may become larger than its mean free path. Calculation of the conductivity in such a case shows a strong tendency towards the insulating state in two dimensions. The compressibility being proportional to the inverse screening length is expected to vanish as the transition to the insulating state is approached. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：707 / 710

页数：4

共 22 条

[1] SCALING THEORY OF LOCALIZATION - ABSENCE OF QUANTUM DIFFUSION IN 2 DIMENSIONS [J].