EDGE STATES IN THE FRACTIONAL QUANTUM HALL-EFFECT

被引：61

作者：

WANG, JK

GOLDMAN, VJ

机构：

[1] Department of Physics, State University of New York, Stony Brook

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.67.749

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied nonlocal electrical transport over macroscopic distances in the regime of the fractional quantum Hall effect (FQHE). Experiments clearly demonstrate dissipationless edge-state conduction associated with the FQHE. Surprisingly, our data imply that there is no edge-state conduction near filling factor-nu = 1/2 and on the low-nu-side of the nu = 1 QHE state, while edge-state conduction is observed near nu = 3/2 and on the high-nu-side of the nu = 1 QHE state. We also observe that the electron-hole symmetry is broken for the edge states in a confined geometry.

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页码：749 / 752

页数：4

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