String-like Clusters and Cooperative Motion in a Model Glass-Forming Liquid

Preprint

27 June 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9706277

Abstract

A large-scale molecular dynamics simulation is performed on a glass-forming Lennard-Jones mixture to determine the nature of dynamical heterogeneities which arise in this model fragile liquid. We observe that the most mobile particles exhibit a cooperative motion in the form of string-like paths (``strings'') whose mean length and radius of gyration increase as the liquid is cooled. The length distribution of the strings is found to be similar to that expected for the equilibrium polymerization of linear polymer chains.

Keywords

MOLECULAR DYNAMICS
COOPERATIVE MOTION
GLASS FORMING
LIKE CLUSTERS
STRING LIKE
MODEL GLASS
POLYMER
STRINGS

All Related Versions

Version 1, 1997-06-27, ArXiv
Published version: Physical Review Letters, 80 (11), 2338.

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