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Investigation of the Interface Between a Normal Metal and High Temperature Superconductor

  • S. P. Ashworth
  • C. Beduz
  • K. Harrison
  • R. G. Scurlock
  • Y. Yang
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 36)

Abstract

Data are presented on the contact resistance between YBCO and arc sprayed silver and copper. Contact resistivities of 3.4 × 10-7 Ωcm2 (Ag on YBCO) and 6 × 10-3 Ωcm2 (Cu on YBCO)) are obtained at 80K without annealing. With annealing, Ag on YBCO resistivities of 10-9 Ωcm2 are obtained. A new technique for measuring these very low contact resistances is outlined. Measurements on Cu and Ag spray coatings on a 10 molar% Ag on YBCO matrix were also carried out, the addition of Ag to YBCO reduced the Cu contact resistivity. These results are interpreted in terms of a percolative Ag path allowing current to bypass a degraded surface region of YBCO.

Keywords

Contact Resistance Normal Metal Contact Resistivity Bulk Resistivity Bulk Superconductor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • S. P. Ashworth
    • 1
  • C. Beduz
    • 1
  • K. Harrison
    • 1
    • 2
  • R. G. Scurlock
    • 1
  • Y. Yang
    • 1
  1. 1.Institute of CryogenicsUniversity of SouthamptonSouthamptonUK
  2. 2.Metco LtdChobham, SurreyUK

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