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Current-Induced Superconductor-Insulator Transition in Granular High-T_c Superconductors

Y. Kopelevich·C. A. M. dos Santos·S. Moehlecke·A. J. S. Machado
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Abstract

In this work we report a systematic study of electrical current effects on superconducting properties of granular Y$_{1-x}$Pr$_{x}$Ba$_{2}$Cu$_{3}$O$_{7-δ}$ samples with x close to the critical Pr concentration above which the superconductivity vanishes. The results indicate the occurrence of superconductor-insulator quantum phase transition (SIT) driven by the applied electrical current, and suggest that the current-induced SIT can be considered as the dynamical counterpart of the magnetic-field- tuned SIT.

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Y. Kopelevich, C. A. M. dos Santos, S. Moehlecke, A. J. S. Machado. 2001-08-20. Current-Induced Superconductor-Insulator Transition in Granular High-T_c Superconductors. https://arxiv.org/abs/cond-mat/0108311

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