Broken time-reversal symmetry scattering at the Anderson transition

被引：6
|
作者：
Alcazar-Lopez, A. [1 ]
Mendez-Bermudez, J. A. [1 ]
Varga, Imre [2 ,3 ,4 ]
机构：
[1] Univ Autonoma Puebla, Inst Fis, Puebla 72570, Mexico
[2] Budapesti Muszaki & Gazdasagtud Egyet, Fizikai Intezet, H-1521 Budapest, Hungary
[3] Univ Marburg, Fachbereich Phys, D-35032 Marburg, Germany
[4] Univ Marburg, Wissensch Zentrum Mat Wissensch, D-35032 Marburg, Germany
来源：
ANNALEN DER PHYSIK | 2009年 / 18卷 / 12期
关键词：
Metal-insulator transition; Anderson model; electronic transport; random matrix theory; CONDUCTANCE DISTRIBUTION; MOBILITY EDGE; UNIVERSALITY;
D O I：
10.1002/andp.200910375
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study numerically the statistical properties of some scattering quantities for the Power-law Banded Random Matrix model at criticality in the absence of time-reversal symmetry, with a small number of single-channel leads attached to it. We focus on the average scattering matrix elements, the conductance probability distribution, and the shot noise power as a function of the effective bandwidth b of the model. We find a smooth transition from insulating- to metallic-like behavior in the scattering properties of the model by increasing b. We contrast our results with existing random matrix theory predictions. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：896 / 900
页数：5
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