Vortex-Loop Unbinding and Flux-Line Lattice Melting in Superconductors

Preprint

3 June 1996

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9606002

Abstract

We study the interplay between a novel vortex-loop unbinding in finite magnetic field at T=T_V and flux-line lattice (FLL) melting at T=T_M in type-II superconductors. The FLL melts due to nucleation of vortex loops parallel to c-axis, connected to flux lines. For moderate anisotropy, phase coherence along c-axis is lost at T_V > T_M due to an ab-plane vortex-loop unbinding with loops located close to thermal FLL fluctuations. For large anisotropy, phase coherence along c-axis is lost at T_V < T_M due to nucleation of ab-plane vortex-loops uncorrelated to flux lines.

Keywords

VORTEX LOOP UNBINDING
SUPERCONDUCTORS
LINE LATTICE
NUCLEATION
ANISOTROPY
FLUX LINES
MELTING

All Related Versions

Version 1, 1996-06-03, ArXiv
Published version: Physical Review Letters, 77 (8), 1592.

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