Dislocations and the critical endpoint of the melting line of vortex line lattices

Details Dislocations and the critical endpoint of the melting line of vortex line lattices Dislocations and the critical endpoint of the melting line of vortex line lattices

1999-09-13

arxiv.org/abs/cond-mat/9909190v1

Phys. Rev. B 61, R14928 (2000)

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 1 figure

Scientific paper

10.1103/PhysRevB.61.R14928

We develop a theory for dislocation-mediated structural transitions in the vortex lattice which allows for a unified description of phase transitions between the three phases, the elastic vortex glass, the amorphous vortex glass, and the vortex liquid, in terms of a free energy functional for the dislocation density. The origin of a critical endpoint of the melting line at high magnetic fields, which has been recently observed experimentally, is explained.

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