Surface diffusion coefficients by thermodynamic integration: Cu on Cu(100)
Materials Science
2009-10-31 v1 Statistical Mechanics
Abstract
The rate of diffusion of a Cu adatom on the Cu(100) surface is calculated using thermodynamic integration within the transition state theory. The results are found to be in excellent agreement with the essentially exact values from molecular-dynamics simulations. The activation energy and related entropy are shown to be effectively independent of temperature, thus establishing the validity of the Arrhenius law over a wide range of temperatures. Our study demonstrates the equivalence of diffusion rates calculated using thermodynamic integration within the transition state theory and direct molecular-dynamics simulations.
Cite
@article{arxiv.cond-mat/9803307,
title = {Surface diffusion coefficients by thermodynamic integration: Cu on Cu(100)},
author = {Ghyslain Boisvert and Normand Mousseau and Laurent J. Lewis},
journal= {arXiv preprint arXiv:cond-mat/9803307},
year = {2009}
}
Comments
4 pages (revtex), two figures (postscript)