Molecular dynamics calculation of the thermal conductivity of vitreous silica

Details Molecular dynamics calculation of the thermal conductivity of vitreous silica Molecular dynamics calculation of the thermal conductivity of vitreous silica

1999-03-02

arxiv.org/abs/cond-mat/9903033v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages, 3 figures. To appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.59.13707

We use extensive classical molecular dynamics simulations to calculate the thermal conductivity of a model silica glass. Apart from the potential parameters, this is done with no other adjustable quantity and the standard equations of heat transport are used directly in the simulation box. The calculations have been done between 10 and 1000 Kelvin and the results are in good agreement with the experimental data at temperatures above 20K. The plateau observed around 10K can be accounted for by correcting our results taking into account finite size effects in a phenomenological way.

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