Coincidence of vortex-lattice melting and loss of vortex correlation along the c direction in untwinned YBa2Cu3O7−δ Single Crystals

D. López, E. F. Righi, G. Nieva, F. de la Cruz

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Abstract

We report on transport measurements using the dc flux transformer configuration in clean and twinned single crystals of YBa2Cu3O7−δ. 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.

Original languageEnglish (US)
Pages (from-to)4034-4037
Number of pages4
JournalPhysical review letters
Volume76
Issue number21
DOIs
StatePublished - May 20 1996

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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