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Anharmonic Decay of Vibrational States in Amorphous Silicon

Jaroslav Fabian·Philip B. Allen
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Abstract

Anharmonic decay rates are calculated for a realistic atomic model of amorphous silicon. The results show that the vibrational states decay on picosecond timescales and follow the two-mode density of states, similar to crystalline silicon, but somewhat faster. Surprisingly little change occurs for localized states. These results disagree with a recent experiment.

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Jaroslav Fabian, Philip B. Allen. 1996-05-16. Anharmonic Decay of Vibrational States in Amorphous Silicon. https://doi.org/10.1103/physrevlett.77.3839

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