Electronic channels for acoustic transport in semiconductor heterostructures

被引：5

作者：

Biermann, K. ^{[1
]}

Couto, O. D. D., Jr. ^{[1
]}

Seidel, W. ^{[1
]}

Hey, R. ^{[1
]}

Santos, P. V. ^{[1
]}

机构：

[1] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 16期

关键词：

QUANTUM-WELL; WAVES;

D O I：

10.1063/1.3407672

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate electronic waveguides for the ambipolar transport of electrons and holes by surface acoustic waves (SAWs) in buried (Al,Ga) As quantum well (QW) structures, which do not require deep-etching for their fabrication. They are defined by tailoring the SAW-induced piezoelectric potential in the QW plane using thin metal stripes deposited onto the piezoelectric cap layer of the QW sample. Acoustic transport experiments show the enhanced capture and acoustic transport of photoexcited carriers underneath the metallic surface stripes. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3407672]

引用

页数：3

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