Nonequilibrium phase transitions of vortex matter in three-dimensional layered superconductors.
Large-scale simulations on the three-dimensional (3D) frustrated anisotropic XY model have been performed to study the nonequilibrium phase transitions of vortex matter in weak random pinning potential in layered superconductors. The first-order phase transition from the moving Bragg glass to the moving smectic is clarified, based on thermodynamic quantities. A washboard noise is observed in the moving Bragg glass in 3D simulations for the first time. It is found that the activation of the vortex loops plays the dominant role in the dynamical melting at high drive.
Chen
Qing-Hu
QH
Computational Materials Science Center, National Institute for Materials Science, Tsukuba 305-0047, Japan.
Hu
Xiao
X