Phys. Rev. B 65, 104302 (2002) [7 pages]Nature of vibrational eigenmodes in topologically disordered solidsReceived 12 November 2001; published 26 February 2002 We use a local projectional analysis method to investigate the effect of topological disorder on the vibrational dynamics in a model glass simulated by molecular dynamics. Evidence is presented that the vibrational eigenmodes in the glass are generically related to the corresponding eigenmodes of its crystalline counterpart via disorder-induced level repelling and hybridization effects. It is argued that the effect of topological disorder in the glass on the dynamical matrix can be simulated by introducing positional disorder in a crystalline counterpart. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.65.104302
DOI:
10.1103/PhysRevB.65.104302
PACS:
63.50.+x, 61.43.-j, 63.20.Dj
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