Superconducting coherence and the helicity modulus in vortex line models

Jack Lidmar; Mats Wallin

doi:10.1103/PhysRevB.59.8451

← Back to search

Superconducting coherence and the helicity modulus in vortex line models

Jack Lidmar, Mats Wallin

DOI 10.1103/PhysRevB.59.8451 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown