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Nonequilibrium states of driven disordered polymorphic solids

Author

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  • Sengupta, Ankush
  • Sengupta, Surajit
  • Menon, Gautam I.

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.

Suggested Citation

  • Sengupta, Ankush & Sengupta, Surajit & Menon, Gautam I., 2007. "Nonequilibrium states of driven disordered polymorphic solids," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 384(1), pages 69-74.
    • Handle: RePEc:eee:phsmap:v:384:y:2007:i:1:p:69-74
    DOI: 10.1016/j.physa.2007.04.121
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