Tunneling investigation of the gap-like feature in superconducting Y1-xPrxBa2Cu3O7 thin films

Mark Covington, Laura H. Greene

Research output: Contribution to journalConference article


We have measured the conductance of Y 1-xPr xBa 2Cu 3O 7/Pb planar tunnel junctions fabricated on thin films where x equals 0, 0.2 and 0.4. When tunneling into the ab-plane, there is a weak decrease in conductance at eV approximately 2k BT c, where a superconducting gap is expected. With increasing Pr concentration, the energy where this gap-like feature appears is reduced by an amount commensurate with the reduction in T c. The gap-like structure in the c-axis tunneling conductance becomes weaker, but displays no change in energy when YBCO is doped with Pr.

Original languageEnglish (US)
Pages (from-to)394-401
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Issue number2/-
StatePublished - Dec 1 1996
EventSpectroscopic Studies of Superconductors. Part 2 (of 2) - San Jose, CA, USA
Duration: Jan 29 1996Feb 1 1996


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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