2005/11/29 by Asaph Widmer‐Cooper, Asaph Widmer-Cooper, Peter Harrowell · 2 citations
Materials Science · Physics and Astronomy · #Clay minerals and soil interactions #Material Dynamics and Properties #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.soft #cond-mat.stat-mech
paper · pdf · doi:10.1016/j.jnoncrysol.2006.01.136
published as Journal of Non-Crystalline Solids 352 (2006) 5098-5102 · 18 pages, 5 figures
arxiv created 2005/11/29 · openalex publication_date 2006/08/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.