Superconducting Coherence in a Vortex Line Liquid; Simulations with Finite \lambda

TL;DR

This study uses simulations to demonstrate that superconducting coherence along magnetic field lines persists in a vortex line liquid phase when considering finite magnetic penetration length, highlighting a key length scale mbda.

Contribution

The paper introduces a simulation approach for lattice London superconductors with finite mbda, revealing persistent coherence in vortex liquids and identifying a relevant length scale mbda.

Findings

Superconducting coherence persists along B in vortex line liquid.

The relevant length scale is mbda=0^2/8T_m.

Finite mbda affects vortex liquid properties.

Abstract

We carry out simulations of a lattice London superconductor in a magnetic field B, with a finite magnetic penetration length \lambda. We find that superconducting coherence parallel to B persists into the vortex line liquid. We argue that the length scale relevant to this effect is \Lambda=\phi_0^2/8\pi T_m.