Kondo effect in low-dimensional disordered systems

被引：0

作者：

Ohashi, T ^{[1
]}

Suga, S ^{[1
]}

机构：

[1] Osaka Univ, Dept Appl Phys, Suita, Osaka 5650871, Japan

来源：

PHYSICA B-CONDENSED MATTER | 2003年 / 329卷

关键词：

Kondo effect; Anderson localization; susceptibility; Kondo temperature;

D O I：

10.1016/S0921-4526(02)02229-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We investigate the Kondo effect in two-dimensional disordered electron systems using a finite-temperature quantum Monte Carlo method. Depending on the position of a magnetic impurity, the local moment is screened or unscreened by the spin of the conduction electron. On the basis of the results, we show that the distribution of the Kondo temperature becomes wide and the weight at T-K = 0 becomes large as randomness increases. The average susceptibility shows a weak power-law or logarithmic divergence at low temperature, indicating a non-Fermi-liquid behavior. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：1275 / 1276

页数：2

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