Volume 54, Number 6, June II 2001
|Page(s)||793 - 799|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 December 2003|
Nature of decoupling in the mixed phase of extremely type-II layered superconductors
Department of Physics and Astronomy,
California State University Los Angeles, CA 90032, USA
Accepted: 5 April 2001
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 vs. 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: 74.60.-w – Type-II superconductivity / 74.25.Dw – Superconductivity phase diagrams / 74.25.Ha – Magnetic properties
© EDP Sciences, 2001
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