Current dependent fluctuations in a Bi$_2$Sr$_2$CuO$_{6+\delta}$ thin film

I. Sfar; Z. Z. Li; F. Bouquet; H. Raffy; L. Fruchter

doi:10.1140/epjb/e2005-00224-2

Current dependent fluctuations in a Bi$_2$Sr$_2$CuO$_{6+\delta}$ thin film

Superconductivity 2009-11-11 v1

Authors: I. Sfar , Z. Z. Li , F. Bouquet , H. Raffy , L. Fruchter

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Abstract

The current dependence of the excess conductivity is measured up to $\simeq 3 T_c$ for a Bi $_2$ Sr $_2$ CuO $_{6+\delta}$ thin film, as a function of doping. It is found to be anomalously sensitive to the transport current and to behave as a universal function of $T/T_c$ in the whole doping range. We discuss these results in the perspective of a granular superconductor with a gapless-like behavior.

Keywords

superconductivity thin film current dependence granular superconductor conductivity

Cite

@article{arxiv.cond-mat/0505271,
  title  = {Current dependent fluctuations in a Bi$_2$Sr$_2$CuO$_{6+\delta}$ thin film},
  author = {I. Sfar and Z. Z. Li and F. Bouquet and H. Raffy and L. Fruchter},
  journal= {arXiv preprint arXiv:cond-mat/0505271},
  year   = {2009}
}

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