Peter Scheidler, Walter Kob, Jurgen Horbach, Kurt Binder
Published 1999-01-11Version 1
We use molecular dynamics computer simulations to calculate the frequency dependence of the specific heat of a SiO_2 melt. The ions interact with the BKS potential and the simulations are done in the NVE ensemble. We find that the frequency dependence of the specific heat shows qualitatively the same behavior as the one of structural quantities, in that at high frequencies a microscopic peak is observed and at low frequencies an alpha-peak, the location of which quickly moves to lower frequencies when the temperature is decreased.
Comments: 6 pages of Latex, 2 figures, uses aipproc.sty; to appear in proceedings of "Neutrons and Numerical Methods" Grenoble, Dec. 1998, Ed. H.G. Buttner et al
Journal: p. 131 in Proceedings of "Neutrons and Numerical Methods"; Eds. M.R. Johnson et al.; AIP conference Proceedings 479, (AIP, Woodbury, 1999)
Frequency dependent specific heat of viscous silica
Structural and dynamical properties of sodium silicate melts: An investigation by molecular dynamics computer simulation
Structural Relaxation and Frequency Dependent Specific Heat in a Supercooled Liquid
