Vortex glass scaling in Pb-doped Bi2223 single crystal

Details Vortex glass scaling in Pb-doped Bi2223 single crystal Vortex glass scaling in Pb-doped Bi2223 single crystal

2009-09-03

arxiv.org/abs/0909.0665v1

JETP Lett. 90, 535 (2009)

Physics

Condensed Matter

Superconductivity

9 pages, 5 figures

Scientific paper

We report on study of the vortex liquid in Pb-doped Bi-2223 single crystal using the in-plane resistivity measurements as a function of temperature and magnetic field up to 6T applied perpendicular to CuO planes. Below Tc at the upper part of superconducting transition we found Arrhenius-like resistivity behavior. With further temperature decrease close to resistivity onset resistivity shows power law dependence on temperature signaling approaching vortex-glass transition. The critical exponents nu(z-1)=4.6 plus-minus 0.5 are found to be field independent within experimental errors. We also present magnetic phase diagram defining region of nonzero critical current for Pb-doped Bi-2223 single crystal.

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