We study the melting of a moving vortex lattice through numerical simulations with the current-driven 3D $\mathrm{XY}$ model with disorder. We find that there is a first-order phase transition even for large disorder when the corresponding equilibrium transition is continuous. The low temperature phase is an anisotropic moving glass.

• Received 23 September 1996

DOI:https://doi.org/10.1103/PhysRevLett.78.2644