Nature of Decoupling in the Mixed Phase of Extremely Type-ii Layered Superconductors
نویسنده
چکیده
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 secondorder 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. PACS Indices: 74.60.-w, 74.25.Dw, 74.25.Ha, 74.60.Ge
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