Vortex structure and resistive transitions in high-Tc superconductors

Abstract

The nature of the resistive transition for a current applied parallel to the magnetic field in high-Tc materials is investigated by numerical simulation on the three dimensional Josephson junction array model. It is shown by using finite size scaling that for samples with disorder the critical temperature Tp for the c axis resistivity corresponds to a percolation phase transition of vortex lines perpendicularly to the applied field. The value of Tp is higher than the critical temperature for j perpendicular to H, but decreases with the thickness of the sample and with anisotropy. We predict that critical behavior around Tp should reflect in experimentally accessible quantities, as the I-V curves.

8 pages + 6 figures

References in corpus (2)

• Phase Transitions and Vortex Line Entanglement in a Model High Temperature Superconductor
• Percolation transition of the vortex lattice and c-axis resistivity in high-temperature superconductors

Cited by in corpus (6)

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• Superconductor-to-Normal Phase Transition in a Vortex Glass Model: Numerical Evidence for a New Percolation Universality Class
• Transport properties and structures of vortex matter in layered superconductors
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• In Search of the Vortex Loop Blowout Transition for a type-II Superconductor in a Finite Magnetic Field
• Longitudinal and transverse dissipation in a simple model for the vortex lattice with screening