VORTEX CORRELATIONS IN ANISOTROPIC TYPE-II SUPERCONDUCTORS - A MONTE-CARLO STUDY

The effects of vortex fluctuations on the phase diagram of clean, anis otropic, type-II superconductors placed in an external magnetic field, H, are investigated by Monte Carlo (MC) simulations of a lattice Lond on model. These simulations are carried out for H parallel to the axis of anisotropy, and allow for finite penetration length lambda. Result s for the dependence on the anisotropy parameter of the vortex-vortex correlation functions are reported. Particular emphasis is placed on t he correlation functions that give information about the nature of the vortex-line liquid phase and its superconducting properties.