UNIFIED MODEL FOR 2 LOCALIZATION PROBLEMS - ELECTRON-STATES IN SPIN-DEGENERATE LANDAU-LEVELS AND IN A RANDOM MAGNETIC-FIELD

被引：127

作者：

LEE, DKK ^{[1
]}

CHALKER, JT ^{[1
]}

机构：

[1] UNIV OXFORD,OXFORD OX1 3NP,ENGLAND

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.72.1510

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A single model is presented which represents both of the two apparently unrelated localization problems of the title. The phase diagram of this model is examined using scaling ideas and numerical simulations. It is argued that the localization length in a spin-degenerate Landau level diverges at two distinct energies, with the same critical behavior as in a spin-split Landau level, and that all states of a charged particle moving in two dimensions, in a random magnetic field with zero average, axe localized.

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页码：1510 / 1513

页数：4

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