Low-Field Phase Diagram of Layered Superconductors: The Role of Electromagnetic Coupling

Details Low-Field Phase Diagram of Layered Superconductors: The Role of Electromagnetic Coupling Low-Field Phase Diagram of Layered Superconductors: The Role of Electromagnetic Coupling

1995-07-07

arxiv.org/abs/supr-con/9507003v2

Physics

Condensed Matter

Superconductivity

12 pages, 1 figure attached as compressed and uuencoded postscript

Scientific paper

10.1103/PhysRevB.54.72

We determine the position and shape of the melting line in a layered superconductor taking the electromagnetic coupling between layers into account. In the limit of vanishing Josephson coupling we obtain a new generic reentrant low-field melting line. Finite Josephson coupling pushes the melting line to higher temperatures and fields and a new line shape $B_{{\rm m}} \propto (1-T/T_c)^{3/2}$ is found. We construct the low-field phase diagram including melting and decoupling lines and discuss various experiments in the light of our new results.

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