EDGE CURRENT IN THE QUANTUM HALL-EFFECT

被引：26
|
作者：
SHIZUYA, K
机构：
[1] Yukawa Institute for Theoretical Physics, Kyoto University
来源：
PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 21期
关键词：
D O I：
10.1103/PhysRevLett.73.2907
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A field-theoretic description of a quantum Hall system with edges is presented with emphasis on the distinction between the Hall current and the diamagnetic edge current. An edge-current picture of the quantum Hall effect is obtained, in which the edge Hall current is characterized as the Hall current expelled from the localization-dominated bulk rather than the diamagnetic current. A general argument is given to show that localization, gauge invariance, and insensitivity of the Hall current to intersubband scattering are essential for the occurrence and exactness of the quantized Hall conductance. © 1994 The American Physical Society.
引用
收藏
页码：2907 / 2910
页数：4
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