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Vortex lattice melting in layered superconductors with periodic columnar pins.

作者信息

Dasgupta C, Valls O T

机构信息

Department of Physics, Indian Institute of Science, Bangalore 560012, India.

出版信息

Phys Rev Lett. 2001 Dec 17;87(25):257002. doi: 10.1103/PhysRevLett.87.257002. Epub 2001 Nov 28.

DOI:10.1103/PhysRevLett.87.257002
PMID:11736600
Abstract

The melting 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 minimization 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. We quantitatively determine the location of this critical point and show that it is experimentally accessible.

摘要

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