Nature of decoupling in the mixed phase ofextremely type-II layered superconductors

Author： Rodriguez J. P.  

Publisher： Edp Sciences

E-ISSN： 1286-4854|54|6|793-799

ISSN： 0295-5075

Source： EPL (EUROPHYSICS LETTERS), Vol.54, Iss.6, 2010-03, pp. : 793-799

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Abstract

The uniformly frustrated layered XY model is analyzed in its Villain form. A decouple pancakevortex liquid phase is identified. It is boundedby both first-order and second-order decoupling linesin the magnetic field vs. temperature plane. These transitions, respectively, can account forthe flux-latticemelting and for the flux-lattice depinning observed in the mixed phase of clean high-temperature superconductors.

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