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Ultrahigh-frequency surface acoustic waves for finite wave-vector spectroscopy of two-dimensional electrons

Kukushkin, I. V. and Smet, J. H. and Höppel, L. and Waizmann, U. and Riek, M. and Wegscheider, Werner (2004) Ultrahigh-frequency surface acoustic waves for finite wave-vector spectroscopy of two-dimensional electrons. Applied Physics Letters 85 (19), pp. 2526-2528.

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Abstract

Ultrahigh-frequency (up to 24 GHz) surface acoustic waves were excited with short-period interdigital transducers and detected in GaAs/AlGaAs quantum wells with an optical scheme. We demonstrate that the transducers can be driven in a contactless fashion. Sets of two transducers permitted the coherent emission of surface acoustic waves and the creation of standing waves due to interference. The methods described offer bright prospects for finite wave-vector spectroscopy of two-dimensional electrons in a noninvasive way up to wave numbers of 106 cm–1.

Item Type:

Article

Institutions:

Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider

Identification Number:

Value	Type
10.1063/1.1815068	DOI

Related URLs:

URL	URL Type
http://link.aip.org/link/?APPLAB/85/4526/1	Publisher

Classification:

Notation	Type
43.38.Rh; 72.30.+q	PACS

Keywords:

aluminium compounds, gallium arsenide, III-V semiconductors, semiconductor quantum wells, surface acoustic wave transducers, interdigital transducers, high-frequency effects

Subjects:

500 Science > 530 Physics

Status:

Published

Refereed:

Unknown

Created at the University of Regensburg:

Unknown

Owner:

Martin Kaiser

Deposited On:

11 Jan 2010 14:15