DETECTION OF COMPOSITE FERMIONS BY MAGNETIC FOCUSING

被引：267

作者：

GOLDMAN, VJ

SU, B

JAIN, JK

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.72.2065

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on transverse magnetic focusing experiments in two-dimensional electron systems in the vicinity of Landau level filling factor nu = 1/2. We observe quasiperiodic magnetic focusing peaks for nu < 1/2 and no periodic structure for nu > 1/2 in several double-constriction GaAs heterojunction samples. The quasiperiod and the direction of focusing in all of these samples are in good quantitative agreement with that expected from semiclassical transport by composite fermions of charge - Absolute value of e.

引用

页码：2065 / 2068

页数：4

共 33 条

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