Two-step melting of the vortex solid in layered superconductors with random columnar pins

Chandan Dasgupta, Oriol T. Valls

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

We consider the melting of the vortex solid in highly anisotropic layered superconductors with a small concentration of random columnar pinning centers. Using large-scale numerical minimization of a free-energy functional, we find that melting of the low-temperature, nearly crystalline vortex solid (Bragg glass) into a vortex liquid occurs in two steps as the temperature increases: the Bragg glass and liquid phases are separated by an intermediate Bose glass phase. A suitably defined local melting temperature exhibits spatial variation similar to that observed in experiments.

Original languageEnglish (US)
JournalPhysical Review Letters
Volume91
Issue number12
DOIs
StatePublished - Jan 1 2003

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