Surface acoustic waves and magnetotransport in an embedded modulated two-dimensional electron gas

被引：3

作者：

Eckl, C ^{[1
]}

Kosevich, YA

Mayer, AP

机构：

[1] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

[2] Max Planck Inst Phys, Komplexer Syst, D-01187 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.61.16708

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The attenuation and frequency shift of surface acoustic waves of Rayleigh and Sezawa types are calculated, which propagate in a layered semiconductor heterostructure containing an embedded spatially modulated two-dimensional electron gas (2DEG). The surface waves couple to the 2DEG via the piezoelectric effect. The electron gas is subjected to a static magnetic field directed normal to the interfaces of the levered system. The one- and two-dimensional periodic spatial modulations are due either to an electrostatic external potential or to a spatially varying magnetic field. The effects of the anisotropy of the elastic media as well as the two-dimensionally modulated electron gas are studied on the Weiss oscillations occurring in this system.

引用

页码：16708 / 16719

页数：12

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