EXPERIMENTAL-STUDY OF THE ACOUSTOELECTRIC EFFECTS IN GAAS-ALGAAS HETEROSTRUCTURES

被引：38

作者：

SHILTON, JM ^{[1
]}

MACE, DR ^{[1
]}

TALYANSKII, VI ^{[1
]}

SIMMONS, MY ^{[1
]}

PEPPER, M ^{[1
]}

CHURCHILL, AC ^{[1
]}

RITCHIE, DA ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST SOLID STATE PHYS,CHERNOGOLOVKA 142432,RUSSIA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1995年 / 7卷 / 39期

关键词：

D O I：

10.1088/0953-8984/7/39/010

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present the results of a detailed experimental study of the electric current and voltage induced in the 2DEG of a GaAs-AlGaAs heterostructure by a surface acoustic wave (SAW). New results are obtained for these acoustoelectric effects at zero and low (< 0.1 T) magnetic fields. At zero magnetic field the acoustoelectric current (voltage) was found to show a non-monotonic temperature dependence with a maximum at 40-50 K. Measurements on high-mobility 2DEGs where the electron mean free path is comparable with the SAW wavelength reveal geometric resonances of the cyclotron orbit with the SAW wavelength. With increasing magnetic field the acoustoelectric effects increase significantly and display rich oscillatory structure. We compare our data for the high-magnetic-field regime with that published in the literature.

引用

页码：7675 / 7685

页数：11

共 50 条

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