MAGNETIC-FIELD-INDUCED TRANSITION FROM AN ANDERSON INSULATOR TO A QUANTUM HALL CONDUCTOR

被引：1

作者：

JIANG, HW ^{[1
]}

GLOZMAN, I ^{[1
]}

JOHNSON, CE ^{[1
]}

HANNAHS, ST ^{[1
]}

机构：

[1] MIT,FRANCIS BITTER NATL MAGNET LAB,CAMBRIDGE,MA 02139

来源：

SURFACE SCIENCE | 1994年 / 305卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(94)90870-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the first experimental observation of a magnetic-field induced transition from an Anderson insulator to a quantum Hall conductor in a two-dimensional electron gas (2DEG) system. With sufficiently strong disorder, the 2DEG is an Anderson insulator with a divergent resistance at B = 0. The 2DEG is transformed into a quantum Hall conductor when the lowest Landau level is filled. This magnetic-field-induced delocalization is consistent with a recently proposed global phase diagram for the quantum Hall effect.

引用

页码：120 / 123

页数：4

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