Kibble-Zurek Mechanism for Nonequilibrium Phase Transitions in Driven Systems with Quenched Disorder

Abstract

We numerically study the density of topological defects for a two-dimensional assembly of particles driven over quenched disorder as a function of quench rate through the nonequilibrium phase transition from a plastic disordered flowing state to a moving anisotropic crystal. A dynamical ordering transition of this type occurs for vortices in type-II superconductors, colloids, and other particle-like systems in the presence of random disorder. We find that on the ordered side of the transition, the density of topological defects ${\rho }_d$ scales as a power law, ${\rho }_d\propto 1/t_q^{\beta }$, where $t_q$ is the time duration of the quench across the transition. This type of scaling is predicted in the Kibble-Zurek mechanism for varied quench rates across a continuous phase transition. We show that scaling with the same exponent holds for varied strengths of quenched disorder. The value of the exponent can be connected to the directed percolation universality class. Our results suggest that the Kibble-Zurek mechanism can be applied to general nonequilibrium phase transitions.

arXiv comment7 pages, 7 figures

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• Apparent delay of the Kibble-Zurek mechanism in quenched open systems
• Kibble-Zurek dynamics in the anisotropic Ising model of the Si(001) surface
• Annealing Dynamics of Regular Rotor Networks: Universality and Its Breakdown
• Deconstructing symmetry breaking dynamics
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• Unifying Kibble-Zurek Mechanism in Weakly Driven Processes