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

Yuri V. Gulyaev

doi:10.1063/1.1655236

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

Yuri V. Gulyaev

Department of Physics

Technical University of Denmark

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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 language	English
Journal	Applied Physics Letters
Volume	24
Issue number	9
Pages (from-to)	405-406
ISSN	0003-6951
DOIs	https://doi.org/10.1063/1.1655236
Publication status	Published - 1974

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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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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. {\textcopyright}1974 American Institute of Physics",

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N2 - 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

AB - 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

U2 - 10.1063/1.1655236

DO - 10.1063/1.1655236

M3 - Journal article

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VL - 24

SP - 405

EP - 406

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 9

ER -

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

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