Anomalous interface resistance between oxide superconductors and noble metals

J. S. Tsai, I. Takeuchi, H. Tsuge, N. Matsukura, S. Miura

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Y-Ba-Cu-O and Bi-Sr-Ca-Cu-O epitaxial films were cleaved in the stream of evaporating noble metals such as Au, Ag and Pt to form well defined SN interfaces. All of interfaces showed a contact resistance in the range of 10−9 Ωm, which is much higher than that of metal/metal interfaces. Anisotropy in contact resistance was observed with Rc ‖ /Rc⊥~15. A pin-hole like phenomenological interface model is given. Several microscopic origins of a such interfacial barrier are discussed. Josephson current was not observed in SNS' junctions made on these interfaces. This is attributed to the small Josephson energy limited by the pin-hole like channels.

Original languageEnglish
Pages (from-to)1627-1628
Number of pages2
JournalPhysica B: Condensed Matter
Volume165-166
DOIs
Publication statusPublished - 1990 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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