Numerical study on “plastic flow - moving solid” transition of charge density waves in nonequilibrium steady state under external drive

Abstract

Dynamical phase transition of charge density waves between plastic flow and moving solid phases controlled by electric field is numerically studied based on the three dimensional driven random field XY model. We analyze a spatial configuration of local velocity and find a percolation transition of a co-moving domain. The critical driving force, however, logarithmically diverges with the observation time. The moving solid phase has a finite life time that grows exponentially with the driving force.