The Structure and Dynamics of Sodium Disilicate
arXiv:cond-mat/9904066 · doi:10.1080/13642819908223085
Abstract
We investigate the structure and dynamics of sodium disilicate by means of molecular dynamics computer simulation. We show that the structure is described by a partially destroyed tetrahedral SiO_4 network and a spherical super structure formed by the silicon and sodium atoms. The static structure factor of our simulation is in very good agreement with one from a neutron scattering experiment. For 1008 particles we find strong finite size effects in the dynamics which are due to the missing of modes contributing to the boson peak.
7 pages of Latex, 3 figures