Determination of onset temperature from the entropy for fragile to strong liquids
arXiv:1705.10139 · doi:10.1063/1.4991848
Abstract
In this paper we establish a connection between the onset temperature of glassy dynamics with the change in the entropy for a wide range of model systems. We identify the crossing temperature of pair and excess entropies as the onset temperature. Below the onset temperature, the residual multiparticle entropy(RMPE), the difference between excess and pair entropies, becomes positive. The positive entropy can be viewed as equivalent to the larger phase space exploration of the system. The new method of onset temperature prediction from entropy is less ambiguous, as it does not depend on any fitting parameter like the existing methods. Our study also reveals the connection between fragility and the degree of breakdown of the Stokes Einstein (SE) relation.
8 pages, 4 figures
References in corpus (9)
- Supercooled Liquids for Pedestrians
- Hopping and the Stokes-Einstein relation breakdown in simple glass formers
- Relationship between thermodynamics and dynamics of supercooled liquids
- Coupling/decoupling between translational and rotational dynamics in a supercooled molecular liquid
- Dynamical Exchanges in Facilitated Models of Supercooled liquids
- Locally preferred structures and many-body static correlations in viscous liquids
- The role of attractive forces in viscous liquids
- The role of structure and entropy in determining differences in dynamics for glass formers with different interaction potentials
- Dependence of the fragility of a glass former on the softness of interparticle interactions
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