Abstract
We discuss the effects of lattice dispersion upon the anharmonic decay of high-energy LA phonons in Ge. At frequencies higher than 2 THz the density of two-phonon final states increases more rapidly than v 2, suggesting that the spontaneous decay rate of the LA phonons depends on the frequency more strongly than v 5. The spatial anisotropy of the decay time is also remarked.
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© 1984 Springer-Verlag Berlin Heidelberg
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Tamura, S., Okubo, K. (1984). Anharmonic Decay of High-Energy LA Phonons. In: Eisenmenger, W., Laßmann, K., Döttinger, S. (eds) Phonon Scattering in Condensed Matter. Springer Series in Solid-State Sciences, vol 51. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82163-9_26
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DOI: https://doi.org/10.1007/978-3-642-82163-9_26
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