NONEQUILIBRIUM NOISE AND FRACTIONAL CHARGE IN THE QUANTUM HALL-EFFECT

被引：273

作者：

KANE, CL ^{[1
]}

FISHER, MPA ^{[1
]}

机构：

[1] IBM CORP,THOMAS J WATSON RES CTR,RES,YORKTOWN HTS,NY 10598

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.72.724

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study nonequilibrium edge state transport in the fractional quantum Hall regime at filling g = 1/m. Tunneling of Laughlin quasiparticles between edges is shown to generate both current and voltage shot noise with a universal ratio of noise amplitudes given by (ge2/h)2. In the weak backscattering limit we predict a current shot noise satisfying Poisson statistics with charge ge, which should enable a direct measurement of the fractional charge of the quasiparticle. On resonance the quasiparticles tunnel in pairs and the effective charge entering the current shot noise becomes 2ge.

引用

页码：724 / 727

页数：4

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