ACOUSTOELECTRIC STUDY OF LOCALIZED STATES IN THE QUANTIZED HALL-EFFECT

被引：42

作者：

ESSLINGER, A ^{[1
]}

WIXFORTH, A ^{[1
]}

WINKLER, RW ^{[1
]}

KOTTHAUS, JP ^{[1
]}

NICKEL, H ^{[1
]}

SCHLAPP, W ^{[1
]}

LOSCH, R ^{[1
]}

机构：

[1] FTZ,TELEKOM FORSCHUNGSINST,W-6100 DARMSTADT,GERMANY

来源：

SOLID STATE COMMUNICATIONS | 1992年 / 84卷 / 10期

关键词：

D O I：

10.1016/0038-1098(92)90797-D

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The acoustoelectric effect caused by momentum transfer from a surface acoustic wave to a two-dimensional electron system is employed to investigate the quantum Hall effect. Strong quantum oscillations of both the acoustoelectric fields and currents are observed and in part explained by a recent model, based on a local description of the conductivity. However, an unexpected bipolar acoustoelectric Hall voltage occuring at integer filling factors is related to localized electron- and hole-like states in the tails of Landau levels. A similar signal is also observed at filling factor v = 5/2.

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页码：939 / 942

页数：4

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