Surface acoustic wave comparison of single and double layer AlGaAs/GaAs 2D hole systems

被引：0

作者：

Dunford, RB ^{[1
]}

Gates, MR ^{[1
]}

Mellor, CJ ^{[1
]}

Rampton, VW ^{[1
]}

Chauhan, JS ^{[1
]}

Middleton, JR ^{[1
]}

Henini, M ^{[1
]}

机构：

[1] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 316卷

关键词：

surface acoustic wave; acoustoelectric effect; double layer hole systems; quantum Hall effect;

D O I：

10.1016/S0921-4526(02)00463-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

For a double layer 2D hole system, a maximum in velocity shift at upsilon = 1 was only observed at frequencies above 560 MHz. The background velocity shift in the region where the Fermi level lies in the extended states region was observed to increase with increasing frequency. Anomalous bipolar peaks centred at 1, 2 and 4 have been observed for high temperatures and powers in the longitudinal acoustoelectric effect at 0.8 GHz. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：219 / 222

页数：4

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