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RESEARCH PRODUCT
The Dynamics of Supercooled Silica: Acoustic modes and Boson peak
Kurt BinderWalter KobJuergen Horbachsubject
PhysicsRange (particle radiation)Statistical Mechanics (cond-mat.stat-mech)Dynamics (mechanics)FOS: Physical sciencesCondensed Matter PhysicsMolecular physicsElectronic Optical and Magnetic MaterialsMolecular dynamicsDispersion relationMaterials ChemistryCeramics and CompositesBoson peakSupercoolingCondensed Matter - Statistical Mechanicsdescription
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 0.13-1.1\AA^{-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 0.39\AA^{-1}.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-10-01 |