A Double-Transition Scenario for Anomalous Diffusion in Glass-Forming Mixtures
Statistical Mechanics
2013-05-29 v1
Abstract
We study by molecular dynamics computer simulation a binary soft-sphere mixture that shows a pronounced decoupling of the species' long-time dynamics. Anomalous, power-law-like diffusion of small particles arises, that can be understood as a precursor of a double-transition scenario, combining a glass transition and a separate small-particle localization transition. Switching off small-particle excluded-volume constraints slows down, rather than enhances, small-particle transport. The data are contrasted with results from the mode-coupling theory of the glass transition.
Cite
@article{arxiv.0812.3599,
title = {A Double-Transition Scenario for Anomalous Diffusion in Glass-Forming Mixtures},
author = {Th. Voigtmann and J. Horbach},
journal= {arXiv preprint arXiv:0812.3599},
year = {2013}
}