Depinning and creep motion in glass states of flux lines

Abstract

Using dynamical computer simulation we have investigated vortex matters in glass states. A genuine continuous depinning transition is observed at zero temperature, which also governs the low-temperature creep motion. With the notion of scaling, we evaluate in high accuracy critical exponents and scaling functions; we observe a non-Arrhenius creep motion for weak collective pinning where Bragg glass (BrG) is stabilized at equilibrium, while for strong pinning the well-known Arrhenius law is recovered. In both cases, a sharp crossover takes place between depinning and creep at low temperatures. The possible relation between the present results and a recent experimental observation of a second-order like phase boundary inside the BrG phase is discussed.

4 pages, 5 figures, contact author: Xiao HU

References in corpus (23)

• Elastic theory of flux lattices in presence of weak disorder
• Creep and depinning in disordered media
• Elastic Theory of pinned flux lattices
• Thermal effects on atomic friction
• Vortex-glass phases in type-II superconductors
• Dynamic Phases of Vortices in Superconductors with Periodic Pinning
• Moving glass phase of driven lattices
• Moving glass theory of driven lattices with disorder
• Nonequilibrium Steady States of Driven Periodic Media
• Pinning and Sliding of Driven Elastic Systems: from Domain Walls to Charge Density Waves
• Weak- to strong pinning crossover
• Temporal Order in Dirty Driven Periodic Media
• Hysteretic dynamics of domain walls at finite temperatures
• Creep motion of an elastic string in a random potential
• The Phase Diagram of Disordered Vortices from London Langevin Simulations
• Comment on "Moving Glass Phase of Driven Lattices"
• Depinning transition and thermal fluctuations in the random-field Ising model
• Equilibrium First-Order Melting and Second-Order Glass Transitions of the Vortex Matter in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_8$
• Thermal Rounding of the Charge Density Wave Depinning Transition
• Creep in One Dimension and Phenomenological Theory of Glass Dynamics
• Nonequilibrium Phase Transitions of Vortex Matter in Three-Dimensional Layered Superconductors
• Velocity-force characteristics of a driven interface in a disordered medium
• Numerical simulation evidence of dynamical transverse Meissner effect and moving Bose glass phase

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• Simulation of the vortex dynamics in a real pinning landscape of YBa${}_2$Cu${}_3$O${}_{7-\delta }$ coated conductors
• Thermal rounding exponent of the depinning transition of an elastic string in a random medium
• Thermal rounding of the depinning transition in ultrathin Pt/Co/Pt films
• The elastic depinning transition of vortex lattices in two dimensions
• Relaxation dynamics in type-II superconductors with point-like and correlated disorder
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• Phase transition in site-diluted Josephson junction arrays: A numerical study
• Large-scale Monte Carlo simulations for the depinning transition in Ising-type lattice models
• Dynamics of vortex glass phase in strongly type II superconductors
• Depinning phase transition in two-dimensional clock model with quenched randomness
• Dynamics of glass phases in the two-dimensional gauge glass model
• Driven flux-line lattices in the presence of weak random columnar disorder: Finite-temperature behavior and dynamical melting of moving Bose glass
• Critical Scaling and Aging near the Flux Line Depinning Transition
• Anisotropic vortex motion and two-dimensional superconducting transition
• Nonsteady dynamics at the dynamic depinning transition in the two-dimensional Gaussian random-field Ising model