Observation of Josephson vortex lattice melting in a highly anisotropic superconductor

M. S. Fuhrer, K. Ino, K. Oka, Y. Nishihara, A. Zettl

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Abstract

The Josephson vortex lattice state of the highly anisotropic high-Tc superconductor Bi2Sr2CaCu2O8 has been probed by measurements of the out-of-plane (c-axis) resistivity as a function of temperature, current density, magnetic field strength H and magnetic field orientation angle θ. Anomalous dissipation is observed below a critical temperature identified as the melting transition of the Josephson vortex lattice. The critical T-H and T-θ phase boundaries are determined. The melting transition is interpreted as a Kosterlitz-Thouless depairing of interlayer vortex/anti-vortex pairs. The same model accounts well for unusual in-plane dissipation observed previously in Bi2Sr2CaCu2O8.

Original languageEnglish
Pages (from-to)841-845
Number of pages5
JournalSolid State Communications
Volume101
Issue number11
DOIs
Publication statusPublished - 1 Jan 1997
Externally publishedYes

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