Resonant diffusion on solid surfaces
Statistical Mechanics
2011-04-12 v2 Mesoscale and Nanoscale Physics
Abstract
A new approach to Brownian motion of atomic clusters on solid surfaces is developed. The main topic discussed is the dependence of the diffusion coefficient on the fit between the surface static potential and the internal cluster configuration. It is shown this dependence is non-monotonous, which is the essence of the so-called resonant diffusion. Assuming quicker inner motion of the cluster than its translation, adiabatic separation of these variables is possible and a relatively simple expression for the diffusion coefficient is obtained. In this way, the role of cluster vibrations is accounted for, thus leading to a more complex resonance in the cluster surface mobility.
Cite
@article{arxiv.1006.4440,
title = {Resonant diffusion on solid surfaces},
author = {Roumen Tsekov},
journal= {arXiv preprint arXiv:1006.4440},
year = {2011}
}