Anderson localization: 2-D system in an external magnetic field and the generalized diffusion approach

被引：1
作者：
Kuzovkov, V. N. [1 ]
机构：
[1] Latvian State Univ, Inst Solid State Phys, LV-1063 Riga, Latvia
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2009年 / 246卷 / 06期
关键词：
METAL-INSULATOR-TRANSITION; LYAPUNOV EXPONENT; 2; DIMENSIONS; ANALYTIC SOLUTION; SCALING THEORY; PERCOLATION; ABSENCE;
D O I：
10.1002/pssb.200844344
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The analytical approach developed by us for the calculation of the phase diagram for the Anderson localization via disorder [J. Phys. Condens. Matter 14, 13777 (2002)] is generalized here to the case of a strong magnet field when q subbands (q = 1,2,3) arise. It is shown that in a line with the generally accepted point of view each subband is characterized by a critical point with a divergent localization length xi which, reveals anomaly in energy and disorder parameters. These critical points belong to the phase coexistence area which cannot be interpreted by means of numerical investigations. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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页码：1257 / 1267
页数：11
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