Abstract
Ultrasonic harmonic generation is investigated in semiconductors and semimetals where deformation potential coupling is the dominant mechanism in the interaction of ultrasound with the free charge carriers. In extrinsic semiconductors, where one type of carrier dominates the interaction, it is found that the harmonic generation due to deformation potential coupling is much weaker than that due to piezoelectric coupling in a typical piezoclectric semiconductor up to frequencies well into the gigahertz regime. When the minority carriers dominate the interaction or in intrinsic semiconductors and semimetals, harmonic generation due to deformation potential coupling can become comparable to that arising from piezoelectric coupling in a typical piezoelectric semiconductor.
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Spector, H.N. Ultrasonic harmonic generation in semiconductors and semimetals with deformation potential coupling. Appl. Phys. 4, 135–140 (1974). https://doi.org/10.1007/BF00884268
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DOI: https://doi.org/10.1007/BF00884268