PHASE-DIAGRAM FOR A DRIVEN VORTEX LATTICE IN LAYERED SUPERCONDUCTORS

The dynamic phase transitions in a driven vortex lattice subject to qu enched disorder are investigated by numerical simulations of the lime- dependent Ginzburg-Landau-Lawrence-Doniach equations. We have consider ed a bilayered system as a prototype of multilayered current-carrying superconductors. Two transitions are examined: a dynamic melting trans ition, similar to single-layer systems, and a decoupling transition, w hich may occur only in a multilayered system. A universal structure of the phase-transition lines as functions of renormalized interlayer co upling and ''shaking temperature,'' which measures the disorder-induce d effective Langevin force, is established.