Sublimated Decoupling of the Vortex Lattice in Extremely Type-II Layered Superconductors

Details Sublimated Decoupling of the Vortex Lattice in Extremely Type-II Layered Superconductors Sublimated Decoupling of the Vortex Lattice in Extremely Type-II Layered Superconductors

2002-01-31

arxiv.org/abs/cond-mat/0201581v4

Phys. Rev. B 66, 214506 (2002); 69, 069901(E) (2004)

Physics

Condensed Matter

Superconductivity

15 pgs. of plain TeX, 2 figs, erratum appended

Scientific paper

10.1103/PhysRevB.66.214506

The question of whether layer decoupling and vortex-lattice melting occur seperately or not in the mixed phase of pristine layered superconductors in the extreme type-II limit is studied through a partial duality analysis of the layered XY model with uniform frustration. We find that both transitions occur simultaneously if the normal/superconducting transition of the vortex lattice in an isolated layer is first-order and if a sufficient degree of layer anisotropy exists. We also find that a cross-over to a highly entangled vortex lattice phase with relatively low phase rigidity across layers does not occur in practice under any circumstances at temperatures below the two-dimensional vortex-lattice melting transition.

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