Dynamical heterogeneity in lattice glass models

The Journal of Chemical Physics
Richard K DarstG Biroli

Abstract

In this paper, we consider in detail the properties of dynamical heterogeneity in lattice glass models (LGMs). LGMs are lattice models whose dynamical rules are based on thermodynamic, as opposed to purely kinetic, considerations. We devise a LGM that is not prone to crystallization and displays properties of a fragile glass-forming liquid. Particle motion in this model tends to be locally anisotropic on intermediate time scales even though the rules governing the model are isotropic. The model demonstrates violations of the Stokes-Einstein relation and the growth of various length scales associated with dynamical heterogeneity. We discuss future avenues of research comparing the predictions of LGMs and kinetically constrained models to atomistic systems.

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Citations

Mar 14, 2014·The Journal of Physical Chemistry. B·Alessandro Patti
Jun 17, 2010·The Journal of Chemical Physics·Alessandro PattiMarjolein Dijkstra
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Nov 4, 2020·The Journal of Chemical Physics·Mauro Sellitto
Jan 15, 2011·Physical Review Letters·Mauro SellittoJeferson J Arenzon

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