Positive magnetoresistance of composite fermion systems with a weak one-dimensional density modulation

被引：29

作者：

Zwerschke, SDM ^{[1
]}

Gerhardts, RR ^{[1
]}

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.83.2616

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Adopting the mean-field composite fermion picture, we describe the magnetotransport properties around filling factor v = 1/2 of a two-dimensional electron gas with a weak one-dimensional density modulation, The occurrence of a strong positive magnetoresistance at low effective magnetic fields as well as Weiss oscillations, which were observed in recent experiments in such systems, can be explained within a semiclassical Boltzmann equation approach, provided one goes beyond a second order approximation in the modulation strength.

引用

页码：2616 / 2619

页数：4

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