Vortex line ordering in the driven three-dimensional vortex glass.
Resistively shunted junction dynamics is applied to the three-dimensional uniformly frustrated XY model with randomly perturbed couplings, as a model for driven steady states in a type-II superconductor with quenched point pinning. For a disorder strength p strong enough to produce a vortex glass in equilibrium, we map the phase diagram as a function of temperature T and uniform driving current I. Using finite size analysis and averaging over many realizations of quenched randomness we find a first-order melting T(m)(I) from a vortex line smectic to an anisotropic liquid.
Ghosh
Ajay Kumar
AK
Department of Physics, Umeå University, 901 87 Umeå, Sweden and Department of Physics, Jadavpur University, Kolkata 700032, India.
Olsson
Peter
P
Teitel
S
S