Dynamics of glass phases in the three-dimensional gauge glass modelQ. H. Chen 1, 2
1 Center for Statistical and Theoretical Condensed Matter Physics, Zhejiang Normal University, Jinhua 321004, PRC
2 Department of Physics, Zhejiang University - Hangzhou 310027, PRC
received 5 June 2008; accepted in final form 5 November 2008; published December 2008
published online 17 December 2008
Large-scale simulations have been performed in the current-driven three-dimensional XY gauge glass model with resistively-shunted-junction dynamics. It is observed that the linear resistivity at low temperatures tends to zero, providing a strong evidence of a finite-temperature glass transition. Dynamical-scaling analysis demonstrates that a perfect collapse of current-voltage data can be achieved. The obtained critical exponents agree quite well with those in equilibrium Monte Carlo simulations. A genuine continuous depinning transition is found at zero temperature. For low-temperature creep motion, critical exponents are evaluated, and a non-Arrhenius creep motion is observed in the glass phase.
47.32.C- - Vortex dynamics.
64.70.Q- - Theory and modeling of the glass transition.
68.35.Rh - Phase transitions and critical phenomena.
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