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The Dynamics of Supercooled Silica: Acoustic modes and Boson peak

Juergen Horbach·Walter Kob·Kurt Binder
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Abstract

Using molecular dynamics computer simulations we investigate the dynamics of supercooled silica in the frequency range 0.5-20~THz and the wave-vector range 0.13-1.1Å^{-1}. We find that for small wave-vectors the dispersion relations are in very good agreement with the ones found in experiments and that the frequency at which the boson-peak is observed shows a maximum at around 0.39Å^{-1}.

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Juergen Horbach, Walter Kob, Kurt Binder. 1997-10-01. The Dynamics of Supercooled Silica: Acoustic modes and Boson peak. https://doi.org/10.1016/s0022-3093(98)00593-6

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