Pulse propagation in spin-polarized edge channels and at fractional filling factors

被引：2

作者：

Ernst, G

Zhitenev, NB

Haug, RJ

vonKlitzing, K

Eberl, K

机构：

[1] Max-Planck-Inst. Festkorperforschung, 70569 Stuttgart

来源：

SURFACE SCIENCE | 1996年 / 361卷 / 1-3期

关键词：

electrical transport measurements; heterojunctions; magnetic phenomena;

D O I：

10.1016/0039-6028(96)00341-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have studied time-resolved ina two-dimensional electron gas in high magnetic fields. At filling factor nu=3, two edge magnetoplasmon modes appear which contribute to the transmission of negative pulses, whereas for positive pulses the signal is transmitted by only one collective mode. While the spreading of the potential just above nu=1 is not restricted to edge channels alone, a fast propagating signal in an edge mode was observed at filling factor nu=4/3.

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页码：102 / 105

页数：4

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