Long-Wavelength Phonon Scattering in Nonpolar Semiconductors

Peter Lawætz

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The long-wavelength acoustic- and optical-phonon scattering of carriers in nonpolar semiconductors is considered from a general point of view. The deformation-potential approximation is defined and it is shown that long-range electrostatic forces give a nontrivial correction to the scattering. For completeness, corrections due to nonlocal effects like spin-orbit coupling are treated, but the general conclusion is that the deformation-potential approach is a very good approximation except in some cases of optical-phonon scattering. The smallness of the nontrivial corrections is interpreted in terms of the very-short-range nature of interactions in a covalent semiconductor.
Original languageEnglish
Issue number3
Pages (from-to)730-739
Publication statusPublished - 1969

Bibliographical note

Copyright (1969) by the American Physical Society.

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