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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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 ...
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|Date:||8 November 2004|
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|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|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||11 Jan 2010 13:15|
|Last Modified:||13 Mar 2014 12:21|