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Phys. Rev. Lett. 87, 226803 (2001) [4 pages]

Self-Induced Acoustic Transparency in Semiconductor Quantum Films

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A. O. Govorov1,2,*, A. V. Kalameitsev1, V. M. Kovalev1, H.-J. Kutschera3, and A. Wixforth3
1Institute of Semiconductor Physics, Russian Academy of Sciences, Siberian Branch, 630090 Novosibirsk, Russia
2Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701
3Sektion Physik der Ludwig-Maximilians-Universität and Center for Nano-Science, Geschwister-Scholl-Platz 1, 80539 München, Germany

Received 13 March 2001; published 8 November 2001

We develop a quantum theory of the nonlinear interaction between intense surface acoustic waves and electrons in a quantum well in the regime of moving quantum wires and dots. In the quantum nonlinear regime, the sound attenuation exhibits quantum oscillations and dramatically decreases with increasing quantization. In the case of dynamically created electron dots formed by two acoustic waves, the waves can propagate without any dissipation in the limit of high sound intensity and, hence, the electron quantum film acts as an acoustically quasitransparent material.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.226803
DOI:
10.1103/PhysRevLett.87.226803
PACS:
73.50.Rb, 72.50.+b, 73.50.Fq

*Email address: govorov@helios.phy.ohiou.edu

 
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