Current-Induced Superconductor-Insulator Transition in Granular High-Tc Superconductors
Kopelevich, Y. · Santos, C. A. M. dos · Moehlecke, S. · Machado, A. J. S.
Original · EN
In this work we report a systematic study of electrical current effects on superconducting properties of granular Y₁₋ₓPrₓBa₂Cu₃O₇₋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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