In this work we report a systematic study of electrical current effects onsuperconducting properties of granularY$_{1-x}$Pr$_{x}$Ba$_{2}$Cu$_{3}$O$_{7-\delta}$ samples with x close to thecritical Pr concentration above which the superconductivity vanishes. Theresults indicate the occurrence of superconductor-insulator quantum phasetransition (SIT) driven by the applied electrical current, and suggest that thecurrent-induced SIT can be considered as the dynamical counterpart of themagnetic-field- tuned SIT.
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机译：在这项工作中，我们报告了电流对颗粒Y $ _ {1-x} $ Pr $ _ {x} $ Ba $ _ {2} $ Cu $ _ {3} $ O $ _ {7的超导性质的影响的系统研究。 -x样品的x接近临界Pr浓度，高于该临界浓度时超导消失。结果表明，由施加电流驱动的超导体-绝缘体量子相变（SIT）的发生，并表明电流感应的SIT可以看作是磁场调谐的SIT的动态对应物。
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