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

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

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

Superconductivity 2007-05-23 v1

Authors: Y. Kopelevich , C. A. M. dos Santos , S. Moehlecke , A. J. S. Machado

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 $_{7-\delta}$ 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.

Keywords

superconductor-insulator transition granular superconductors YBCR quantum phase transition electric current

Cite

@article{arxiv.cond-mat/0108311,
  title  = {Current-Induced Superconductor-Insulator Transition in Granular High-T_c Superconductors},
  author = {Y. Kopelevich and C. A. M. dos Santos and S. Moehlecke and A. J. S. Machado},
  journal= {arXiv preprint arXiv:cond-mat/0108311},
  year   = {2007}
}

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