Nonequilibrium steady states of driven magnetic flux lines in disordered type-II superconductors
arXiv:0911.4066 · doi:10.1088/0953-2048/23/2/025023
Abstract
We investigate driven magnetic flux lines in layered type-II superconductors subject to various configurations of strong point or columnar pinning centers by means of a three-dimensional elastic line model and Metropolis Monte Carlo simulations. We characterize the resulting nonequilibrium steady states by means of the force-velocity / current-voltage curve, static structure factor, mean vortex radius of gyration, number of double-kink and half-loop excitations, and velocity / voltage noise spectrum. We compare the results for the above observables for randomly distributed point and columnar defects, and demonstrate that the three-dimensional flux line structures and their fluctuations lead to a remarkable variety of complex phenomena in the steady-state transport properties of bulk superconductors.
23 pages, IOP style, 18 figures included
References in corpus (8)
- Nonequilibrium Phase Transitions of Vortex Matter in Three-Dimensional Layered Superconductors
- Effects of columnar disorder on flux-lattice melting in high-temperature superconductors
- Numerical simulation evidence of dynamical transverse Meissner effect and moving Bose glass phase
- Vortex Washboard Voltage Noise in Type-II Superconductors
- Vortex transport and voltage noise in disordered superconductors
- Mode-locking in driven vortex lattices with transverse ac-drive and random pinning
- Entanglement transition of elastic lines in a strongly disordered environment
- Narrow-band noise due to the moving vortex lattice in superconducting niobium
Cited by in corpus (5)
- Statics and Dynamics of Skyrmions Interacting with Pinning: A Review
- Relaxation and Glassy Dynamics in Disordered Type-II Superconductors
- Relaxation dynamics in type-II superconductors with point-like and correlated disorder
- Rotational transition, domain formation, dislocations and defects in vortex systems with combined six- and 12-fold anisotropic interactions
- Activated vortex lattice transition in a superconductor with combined sixfold and twelvefold anisotropic interactions