Channel diffusion of sodium in a silicate glass
Statistical Mechanics
2009-11-07 v2 Disordered Systems and Neural Networks
Abstract
We use classical molecular dynamics simulations to study the dynamics of sodium atoms in amorphous NaO-4SiO. We find that the sodium trajectories form a well connected network of pockets and channels. Inside these channels the motion of the atoms is not cooperative but rather given by independent thermally activated hops of individual atoms between the pockets. By determining the probability that an atom returns to a given starting site, we show that such events are not important for the dynamics of this system.
Cite
@article{arxiv.cond-mat/0101055,
title = {Channel diffusion of sodium in a silicate glass},
author = {Philippe Jund and Walter Kob and Remi Jullien},
journal= {arXiv preprint arXiv:cond-mat/0101055},
year = {2009}
}
Comments
10 pages of Latex, 5 figures, one figure added, text expanded