Melting of Moving Vortex Lattices With Periodic Pinning

Abstract

We study numerically the effects of temperature on moving vortex lattices interacting with periodic pinning arrays. For low temperatures the vortex lattice flows in channels, forming a hexatic structure with long range transverse and longitudinal ordering. At higher temperatures, a transition to a smectic state occurs where vortices wander between channels and longitudinal order is lost while transverse order remains. At the highest temperatures the vortex lattice melts into an isotropic liquid.

4 postscript figures

References in corpus (7)

• Nonequilibrium Dynamic Phase Diagram for Vortex Lattices
• Dynamic Phases of Vortices in Superconductors with Periodic Pinning
• Nonequilibrium Steady States of Driven Periodic Media
• Hall noise and transverse freezing in driven vortex lattices
• Shapiro steps in a superconducting film with an antidot lattice
• Driven Dynamics of Periodic Elastic Media in Disorder
• Dynamic transition in vortex flow in strongly disordered Josephson junction arrays and superconducting thin films

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• Transverse vortex commensurability effect and sign change of the Hall voltage in superconducting YBa${}_2$Cu${}_3$O${}_{7-\delta }$ thin films with a nanoscale periodic pinning landscape
• Structural Transitions and Dynamical Regimes for Directional Locking of Particles Driven over Periodic Substrates
• Dynamical Phase Diagrams for Moving Vortices Interacting with Periodic Pinning
• A simple model for dynamical melting of moving vortex lattices interacting with periodic pinning
• Lattice Gas Dynamics; Application to Driven Vortices in Two Dimensional Superconductors
• Experimental realization of smectic phase in vortex matter induced by symmetric potentials arranged in two-fold symmetry arrays
• Irreversible Magnetization Deep in the Vortex-Liquid State of a 2D Superconductor at High Magnetic Fields