Phonon structure of unusually high energy and strength in Nb-Nb oxide-Pb tunnel junctions

E. L. Wolf, J. H. Magerlein, W. J. Gallagher, C. J. Kircher

Research output: Contribution to journalArticle

Abstract

Tunneling measurements on Nb-Nb oxide-Pb junctions with barriers formed by rf oxidation reveal phonon modes contributing to the superconducting pair potential Δ(E) at E=115 meV. This structure is interpreted as resulting from vibrations of Nb-O octahedra in an interfacial layer of Nb2O5 in which superconductivity is induced by proximity with Nb.

Original languageEnglish (US)
Pages (from-to)349-353
Number of pages5
JournalPhysics Letters A
Volume97
Issue number8
DOIs
StatePublished - Sep 19 1983

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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