Vortex lattice melting in layered superconductors with periodic columnar pins
Superconductivity
2009-11-07 v1
Abstract
The melting transition of the vortex lattice in highly anisotropic, layered superconductors with commensurate, periodic columnar pins is studied in a geometry where magnetic field and columnar pins are normal to the layers. Thermodynamic properties and equilibrium density distributions are obtained from numerical minimizations of an appropriate free-energy functional. We find a line of first-order transitions that ends at a critical point as the pin concentration is increased. A simple Landau theory providing a semi-quantitative explanation of the numerical results is proposed.
Keywords
Cite
@article{arxiv.cond-mat/0106274,
title = {Vortex lattice melting in layered superconductors with periodic columnar pins},
author = {Chandan Dasgupta and Oriol T. Valls},
journal= {arXiv preprint arXiv:cond-mat/0106274},
year = {2009}
}
Comments
Four pages, 3 Figures