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Measurement of Fluctuation-Enhanced Conductivity Above Tc in Y-Ba-Cu-O

  • M. A. Dubson
  • J. J. Calabrese
  • S. T. Herbert
  • D. C. Harris
  • B. R. Patton
  • J. C. Garland

Abstract

We have made careful measurements of the resistivity vs. temperature in a sample of polycrystalline YBa2Cu3O7-δ and have fit the data to a theoretical expression for the fluctuation-enhanced conductivity in the normal state. From this fit, we infer a value for the zero-temperature Ginzberg-Landau coherence length ξ(0) of 21±5Å.

Keywords

Contact Resistance Careful Measurement Theoretical Expression Quantum Fluctuation Platinum Resistance Thermometer 
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References

  1. 1.
    X.D. Chen, S.Y. Lee, J.P. Golben, S.I. Lee, R.D. McMichael, Y. Song, T.W. Noh, and J.R. Gaines, Rev. Sci. Instrum., in press.Google Scholar
  2. 2.
    B.R. Patton, to be published. Eq.(2) interpolates between the classical and quantum fluctuation regions above Tc.Google Scholar

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • M. A. Dubson
    • 1
  • J. J. Calabrese
    • 1
  • S. T. Herbert
    • 1
  • D. C. Harris
    • 1
  • B. R. Patton
    • 1
  • J. C. Garland
    • 1
  1. 1.Department of PhysicsThe Ohio State UniversityColumbusUSA

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