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

Claudio Donati; Jack F Douglas; Walter Kob; Steven J Plimpton; Peter H Poole; Sharon C Glotzer

doi:10.48550/arxiv.cond-mat/9706277

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

Claudio Donati, Jack F Douglas, Walter Kob, Steven J Plimpton, Peter H Poole et Sharon C Glotzer

27/06/1997

DOI: https://doi.org/10.48550/arxiv.cond-mat/9706277

Résumé

Physics - Disordered Systems and Neural Networks

Phys. Rev. Lett. 80, 2338 (1998) 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.

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Détails

Titre: String-like Clusters and Cooperative Motion in a Model Glass-Forming Liquid
Créateurs - sans rôle: Claudio Donati - NIST
Jack F Douglas - NIST
Walter Kob - Mainz
Steven J Plimpton - Sandia
Peter H Poole - London
Sharon C Glotzer - NIST
Identifiants: 99147421709311
Unité académique: Laboratoire Charles Coulomb - L2C
Langue: English
Type de ressource: Preprint