Coincidence of Vortex-Lattice Melting and Loss of Vortex Correlation along thecDirection in UntwinnedYBa2Cu3O7−δSingle Crystals

Autor:	G. Nieva, E. F. Righi, F. de la Cruz, D. Lopez
Rok vydání:	1996
Předmět:	Phase transition Liquid state Materials science Condensed matter physics Condensed Matter::Superconductivity Lattice (order) General Physics and Astronomy Flux transformer Coincidence Magnetic field Vortex
Zdroj:	Physical Review Letters. 76:4034-4037
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.76.4034
Popis:	We report on transport measurements using the dc flux transformer configuration in clean and twinned single crystals of ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7\ensuremath{-}\ensuremath{\delta}}$. We show that correlated disorder changes not only the order of the solid-liquid phase transition but also the nature of the vortices in the liquid state. In clean crystals, melting is shown to take place between a solid of vortex lines and a liquid with no correlation in the direction of the magnetic field.
Databáze:	OpenAIRE
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