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Two-Fluid Model for Granular Superconductors

Authors
  • Santos, C. A. M. dos
  • Oliveira, C. J. V.
  • da Luz, M. S.
  • Bortolozo, A. D.
  • Sandim, M. J. R.
  • Machado, A. J. S.
Type
Published Article
Publication Date
Jan 04, 2006
Submission Date
Jan 04, 2006
Identifiers
DOI: 10.1103/PhysRevB.74.184526
arXiv ID: cond-mat/0601064
Source
arXiv
License
Unknown
External links

Abstract

A two-fluid model is proposed to describe the transport properties of granular superconductors. Using the resistively shunted junction model and some aspects of the two-level system theory, a statistical model is developed which takes into account the ratio between the number of normal and superconducting electrons carrying the applied current. The theoretical model reveals excellent agreement when compared to transport properties of four high-Tc superconductors. The results suggest that the two-fluid model is independent of the sample composition, critical temperature and whether the superconducting compound is electron or hole-doped.

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