Characteristics of Zr-based single- and multiple-barrier superconducting tunnel junctions

I. P. Nevirkovets*, O. Chernyashevskyy, J. B. Ketterson

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Using Zr oxide for the tunnel barrier formation, it is shown experimentally that the effect of pinholes is suppressed in the double-barrier versus single-barrier junction configuration. It is found that Josephson current in NbZr double-barrier junctions is much lower than in NbAl junctions with comparable specific tunneling resistance and middle layer thickness. Multiple oxidation process is used to improve the quality of superconductor-insulator- superconductor Zr-based junctions.

Original languageEnglish (US)
Article number212504
JournalApplied Physics Letters
Volume88
Issue number21
DOIs
StatePublished - May 21 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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