First order melting transition in isotropic extreme type-II superconductors

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  • 7 September 1998
Abstract
Using large scale Monte Carlo simulations on a uniformly frustrated 3D-XY model, we report a first order vortex crystal melting transition in clean, isotropic extreme type-II ($\kappa \to \infty$) superconductors. This work clarifies an important issue: the unpinned vortex liquid is always incoherent with no phase coherence in any directions for all anisotropies. Previous claims of a disentangled vortex liquid for isotropic superconductors based on simulations, are due to finite size effects.

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