Nonequilibrium states of driven disordered polymorphic solids

Sengupta, Ankush ; Sengupta, Surajit ; Menon, Gautam I. (2007) Nonequilibrium states of driven disordered polymorphic solids Physica A: Statistical Mechanics and its Applications, 384 (1). pp. 69-74. ISSN 0378-4371

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.physa.2007.04.121

Abstract

Condensed matter systems, when driven far from equilibrium, often exhibit a far more varied set of phases than their equilibrium counterparts. The existence of non-equilibrium analogs of 'solids' and 'liquids' has been demonstrated earlier in the context of models for driven disordered vortex lattices in superconductors. Here we study the effects of a structural (polymorphic) transition in a driven two-dimensional crystal placed in a quenched random background. Such a polymorphic crystal is shown to exhibit a complex sequence of unusual dynamical phases as the external drive is varied, including some which have no analog in the undriven pure system. We propose that such states should be accessible in experiments

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Driven Systems; Nonequilibrium Phase Transitions; Structural Transitions; Vortex Matter; Hexatic Glass
ID Code:56559
Deposited On:24 Aug 2011 11:09
Last Modified:24 Aug 2011 11:09

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