CURRENT CONTACTS AND CURRENT DISTRIBUTION IN THE QUANTUM HALL-EFFECT

被引：27

作者：

VANSON, PC

KLAPWIJK, TM

机构：

[1] University of Groningen, Groningen

来源：

EUROPHYSICS LETTERS | 1990年 / 12卷 / 05期

关键词：

D O I：

10.1209/0295-5075/12/5/009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We extend Buttikers approach to the quantum Hall effect (Phys. Rev. B, 38 (1988) 9375 to the regime where the applied voltage exceeds the cyclotron energy. Then both edge and bulk states are relevant for the charge transport and we discuss how these states are (de-) populated by the current contacts. For large voltages nonequilibrium effects are induced by the electron-injection contact only. This explains the intrinsic asymmetry observed in experiments on the breakdown of the quantum Hall effect. © 1990 IOP Publishing Ltd.

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页码：429 / 434

页数：6

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