Correlation Lengths in the Vortex Line Liquid of a High Tc Superconductor
arXiv:cond-mat/9810169 · doi:10.1103/PhysRevLett.82.2183
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