Free Volume cannot Explain the Spatial Heterogeneity of Debye-Waller factors in a Glass-Forming Binary Alloy

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

We examine the relation between the free volume per particle and the variance of the particle position, equivalent to a local Debye-Waller (DW) factor for a 2D glass-forming alloy using molecular dynamics simulations. We find that the latter quantity exhibits significant spatial heterogeneity despite involving trajectories two orders of magnitude shorter than those typically used to measure such heterogeneities. We find that the free volume exhibits no significant spatial correlation with the local DW factor. We conclude that the spatial variation in local free volume is not the cause of the short time dynamic heterogeneity.
18 pages, 5 figures

Keywords

Disordered Systems and Neural Networks, Soft Condensed Matter, Statistical Mechanics

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/216849

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0511690
 http://arxiv.org/abs/cond-mat/0511690
 Journal of Non-Crystalline Solids 352 (2006) 5098-5102
 doi:10.1016/j.jnoncrysol.2006.01.136

Collections

arXiv