Phys. Rev. Lett. 77, 3839–3842 (1996)Anharmonic Decay of Vibrational States in Amorphous SiliconReceived 15 May 1996; revised 22 August 1996; published in the issue dated 28 October 1996 Anharmonic decay rates are calculated for a realistic atomic model of amorphous silicon. The results show that the vibrational states decay on picosecond time scales and their decay rates increase with increasing frequency. These results disagree with a recent experiment. In contrast to predictions of the fracton model, we find no evidence that the anharmonic decay is inhibited in the region of localized states. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.77.3839
DOI:
10.1103/PhysRevLett.77.3839
PACS:
63.20.Kr, 63.20.Pw, 63.50.+x
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