Analysis of Dynamic Heterogeneity in a Glass Former from the Spatial Correlations of Mobility

Karmakar, Smarajit and Dasgupta, Chandan and Sastry, Srikanth (2010) Analysis of Dynamic Heterogeneity in a Glass Former from the Spatial Correlations of Mobility. In: Physical Review Letters, 105 (1).

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Abstract

The growth of characteristic length scales associated with dynamic heterogeneity in glass-forming liquids is investigated in an extensive computational study of a four-point, time-dependent structure factor defined from spatial correlations of mobility, for a model liquid for system sizes extending up to 351 232 particles, in constant-energy and constant-temperature ensembles. Our estimates for dynamic correlation lengths and susceptibilities are consistent with previous results from finite size scaling. We find scaling exponents that are inconsistent with predictions from inhomogeneous mode coupling theory and a recent simulation confirmation of these predictions.

Item Type:	Journal Article
Publication:	Physical Review Letters
Publisher:	The American Physical Society
Additional Information:	Copyright of this article belongs to The American Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	21 Jul 2010 10:48
Last Modified:	19 Sep 2010 06:11
URI:	http://eprints.iisc.ac.in/id/eprint/30381

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