Rotational relaxation in Brownian rotors with frustrated interactions on a square lattice
Statistical Mechanics
2009-10-31 v2
Abstract
We present simulation results on the equilibrium relaxation of Brownian planar rotors based on a uniformly frustrated XY model on a square lattice. The rotational relaxation exhibits typical dynamic features of fragile supercooled liquids including the two-step relaxation. We observe a dynamic cross-over from high temperature regime with Arrhenius behavior to low temperaure regime with temperature-dependent activation energy. A consistent picture for the observed slow dynamics can be given in terms of caging effect and thermal activation across potential barriers in the energy landscapes.
Keywords
Cite
@article{arxiv.cond-mat/9901077,
title = {Rotational relaxation in Brownian rotors with frustrated interactions on a square lattice},
author = {Sung Jong Lee and Bongsoo Kim},
journal= {arXiv preprint arXiv:cond-mat/9901077},
year = {2009}
}
Comments
19 pages, 10 figures, To appear in PRE