Free volume cannot explain the spatial heterogeneity of Debye-Waller factors in a glass-forming binary alloy

@article{citeulike:2517667, abstract = {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.}, author = {Widmer-Cooper, Asaph and Harrowell, Peter }, booktitle = {Proceedings of the 5th International Discussion Meeting on Relaxations in Complex Systems, 5th International Discussion Meeting on Relaxations in Complex Systems}, citeulike-article-id = {2517667}, doi = {10.1016/j.jnoncrysol.2006.01.136}, journal = {Journal of Non-Crystalline Solids}, month = {November}, number = {42-49}, pages = {5098--5102}, posted-at = {2008-03-12 04:09:02}, priority = {2}, title = {Free volume cannot explain the spatial heterogeneity of Debye-Waller factors in a glass-forming binary alloy}, url = {http://dx.doi.org/10.1016/j.jnoncrysol.2006.01.136}, volume = {352}, year = {2006} }

TY - JOUR ID - citeulike:2517667 TI - Free volume cannot explain the spatial heterogeneity of Debye-Waller factors in a glass-forming binary alloy T2 - Proceedings of the 5th International Discussion Meeting on Relaxations in Complex Systems, 5th International Discussion Meeting on Relaxations in Complex Systems JF - Journal of Non-Crystalline Solids VL - 352 IS - 42-49 SP - 5098 EP - 5102 N2 - 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. AU - Widmer-Cooper, Asaph AU - Harrowell, Peter PY - 2006/11/15/ UR - http://dx.doi.org/10.1016/j.jnoncrysol.2006.01.136 ER -