Interaction of surface acoustic waves with a two-dimensional electron system in a LiNbO3-GaAs/AlGaAs sandwich structure
Authors:
- 15 August 1988
- journal article
- letter
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 64 (4) , 2213-2215
Abstract
We describe a simple, contactless method to study the interaction of surface acoustic waves (SAW) with a two‐dimensional electron system (2DES) in GaAs/AlGaAs heterostructures at low temperatures and in high magnetic fields. The heterostructure is part of a sandwich structure on a Y‐cut Z‐propagating LiNbO3‐SAW‐delay line. The interaction of the SAW with the 2DES leads to quantum oscillations of the SAW amplitude as a function of the applied magnetic field which can be used to characterize the sample and to investigate the transport properties of the 2DES.Keywords
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