Nature of Decoupling in the Mixed Phase of Extremely Type-II Layered Superconductors
classification
❄️ cond-mat.supr-con
cond-mat.stat-mechhep-th
keywords
phasedecouplingflux-latticelayeredmixedsuperconductorsaccountanalyzed
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The uniformly frustrated layered XY model is analyzed in its Villain form. A decouple pancake vortex liquid phase is identified. It is bounded by both first-order and second-order decoupling lines in the magnetic field versus temperature plane. These transitions, respectively, can account for the flux-lattice melting and for the flux-lattice depinning observed in the mixed phase of clean high-temperature superconductors.
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