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arXiv · cond-mat/9812343

Superconducting Coherence and the Helicity Modulus in Vortex Line Models

Jack Lidmar·Mats Wallin
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Abstract

We show how commonly used models for vortex lines in three dimensional superconductors can be modified to include k=0 excitations. We construct a formula for the k=0 helicity modulus in terms of fluctuations in the projected area of vortex loops. This gives a convenient criterion for the presence of superconducting coherence. We also present Monte Carlo simulations of a continuum vortex line model for the melting of the Abrikosov vortex lattice in pure YBCO.

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Jack Lidmar, Mats Wallin. 1998-12-21. Superconducting Coherence and the Helicity Modulus in Vortex Line Models. https://doi.org/10.1103/physrevb.59.8451

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