Amplification of surface acoustic waves by transverse electric current in piezoelectric semiconductors

Yuri V. Gulyaev

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Abstract

It is shown that the principal characteristic feature of the surface acoustic waves in piezoelectrics—the presence of an alternating electric field transverse to the surface, which can be of the same order of magnitude as the longitudinal field—may not only give rise to the known transverse acoustoelectric effect but also lead to amplification of surface acoustic waves by electron drift perpendicular to the surface. For Love waves in a piezoelectric semiconductor film on a highly conducting substrate, the amplification coefficient is found and the conditions necessary for amplification are investigated. ©1974 American Institute of Physics
Original languageEnglish
JournalApplied Physics Letters
Volume24
Issue number9
Pages (from-to)405-406
ISSN0003-6951
DOIs
Publication statusPublished - 1974

Bibliographical note

Copyright (1974) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

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