Correlation Lengths in the Vortex Line Liquid of a High Tc Superconductor
Peter Olsson, S. Teitel
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 xiz in the vortex line liquid phase. We determine the scaling of xiz 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.
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