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The electron energy relaxation rate due to an interaction with acoustic phonons has been calculated. Three-dimensional and two-dimensional Fermi electron gases in cubic semiconductors are considered. The anisotropy of the phonon spectrum and relevant phonon polarization states are taken into account. The warping of the phonon spectrum is shown to be of importance at low temperatures.
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Jasiukiewicz et al. (1996) studied this question.
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