Anharmonic Decay of Vibrational States in Amorphous Silicon

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M ay 1 99 6 Anharmonic decay of vibrational states in amorphous silicon Jaroslav Fabian and Philip

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. PACS numbers: 63.20.-e, 63.20.K...

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ژورنال

عنوان ژورنال: Physical Review Letters

سال: 1996

ISSN: 0031-9007,1079-7114

DOI: 10.1103/physrevlett.77.3839