Ricardo Gutierrez
Front propagation versus bulk relaxation in the annealing dynamics of a kinetically constrained model of ultrastable glasses
Gutierrez, Ricardo; Garrahan, Juan P.
Abstract
Glasses prepared by physical vapour deposition have been shown to be remarkably more stable than those prepared by standard cooling protocols, with properties that appear to be similar to systems aged for extremely long times. When subjected to a rapid rise in temperature, ultrastable glasses anneal towards the liquid in a qualitatively different manner than ordinary glasses, with the seeming competition of different time and length scales. We numerically reproduce the phenomenology of ultrastable glass annealing with a kinetically constrained model, a three dimensional East model with soft constraints, in a setting where the bulk is in an ultrastable configuration and a free surface is permanently excited. Annealing towards the liquid state is given by the competition between the ballistic propagation of a front from the free surface and a much slower nucleation-like relaxation in the bulk. The crossover between these mechanisms also explains the change in behaviour with film thickness seen experimentally.
Citation
Gutierrez, R., & Garrahan, J. P. (in press). Front propagation versus bulk relaxation in the annealing dynamics of a kinetically constrained model of ultrastable glasses. Journal of Statistical Mechanics: Theory and Experiment, 2016, https://doi.org/10.1088/1742-5468/2016/07/074005
Journal Article Type | Article |
---|---|
Acceptance Date | May 23, 2016 |
Online Publication Date | Jul 4, 2016 |
Deposit Date | Oct 3, 2016 |
Publicly Available Date | Oct 3, 2016 |
Journal | Journal of Statistical Mechanics: Theory and Experiment |
Electronic ISSN | 1742-5468 |
Publisher | IOP Publishing |
Peer Reviewed | Peer Reviewed |
Volume | 2016 |
DOI | https://doi.org/10.1088/1742-5468/2016/07/074005 |
Keywords | Free Boundary Problems, Glasses (Structural), Slow Relaxation, Glassy Dynamics, Aging, Dynamical Heterogeneities |
Public URL | https://nottingham-repository.worktribe.com/output/802392 |
Publisher URL | http://iopscience.iop.org/article/10.1088/1742-5468/2016/07/074005/meta;jsessionid=1D1B23CB8A76213487839E175D26A212.c4.iopscience.cld.iop.org |
Additional Information | This is an author-created, un-copyedited version of an article published in Journal of Statistical Mechanics: Theory and Experiment. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://iopscience.iop.org/article/10.1088/1742-5468/2016/07/074005/meta |
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