Inherent structures dynamics in glasses: a comparative study
arXiv:cond-mat/0401435 · doi:10.1016/j.physa.2004.04.022
Abstract
A comparative study of the dynamics of inherent structures at low temperatures is performed on different models of glass formers: a three dimensional Lennard-Jones binary mixture (LJBM), facilitated spin models (either symmetrically constrained, SCIC, or asymmetrically, ACIC) and the trap model. We use suitable correlation functions introduced in a previous work which allow to distinguish the behaviour between models with or without spatial or topological structure. Furthermore, the correlations between inherent structures behave differently in the cases of strong (SCIC) and fragile (ACIC, LJBM) glasses, as a consequence of the different role played by energy barriers when the temperature is lowered. The similarities in the behaviour of the ACIC and LJBM suggest a common nature of the glassy dynamics for both systems.
Proceedings of NEXT2003 (News and Expectations in Thermostatistics, Sardinia, Italy, september 2003)
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- Connecting short and long time dynamics in hard-sphere-like colloidal glasses
- Network of inherent structures in spin glasses: scaling and scale-free distributions
- Spatial correlations of elementary relaxation events in glass-forming liquids