Interaction of a surface acoustic wave with a two-dimensional electron gas

被引：2
|
作者：
Yang, SJ [1 ]
Zhao, H
Yu, Y
机构：
[1] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China
[2] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2005年 / 44卷 / 06期
关键词：
surface acoustic wave; piezoelectric coupling;
D O I：
10.1088/6102/44/6/1095
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
When a surface acoustic wave (SAW) propagates on the surface of a GaAs semiconductor, coupling between electrons in the two-dimensional electron gas beneath the interface and the elastic host crystal through piezoelectric interaction will attenuate the SAW. The coupling coefficient is calculated for the SAW propagating along an arbitrary direction. It is found that the coupling strength is strongly dependent on the propagating direction. When the SAW propagates along the [011] direction, the coupling becomes quite weak.
引用
收藏
页码：1095 / 1098
页数：4
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