Correlation Lengths in the Vortex Line Liquid of a High Tc Superconductor

Abstract

We use the three dimensional uniformly frustrated XY model, as a model for a high temperature superconductor in an applied magnetic field, to explicitly measure the longitudinal correlation length xi_z in the vortex line liquid phase. We determine the scaling of xi_z with magnetic field and system anisotropy close to the vortex lattice melting transition. We apply our results to determine the extent of longitudinal correlations in YBCO just above melting.

4 pages, 5 embedded eps figures Minor changes from original version

References in corpus (3)

• Critical Behavior of the Meissner Transition in the Lattice London Superconductor
• Phase-coherence and the boson-analogy of vortex liquids
• Numerical study of vortex matter using the Bose model: First-order melting and entanglement

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• Driven vortices in 3D layered superconductors: Dynamical ordering along the c-axis
• Phase-transitions in isotropic extreme type-II superconductors
• Theory of Decoupling in the Mixed Phase of Extremely Type-II Layered Superconductors
• Vortex glass transitions in disordered three-dimensional XY models: Simulations for several different sets of parameters
• In Search of the Vortex Loop Blowout Transition for a type-II Superconductor in a Finite Magnetic Field
• Entanglement in Dilute Flux Line Liquids
• Liquid-to-liquid phase transition in pancake vortex systems