Properties of stacked Nb/Al-AlOx/Nb tunnel junctions

I. P. Nevirkorvets*, H. Kohlstedt, G. Hallmanns, C. Heiden

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Successful fabrication of stacked Nb-(Al/AlOx-Nb)n superconducting tunnel junctions with n=3 is reported. Coupling effects are visible in the three measured Fraunhofer patterns of the individual junctions. One of the patterns always shows a considerable field spreading in comparison with the other two patterns, as if the corresponding junction area were much smaller. Negative resistance measured as a function of temperature between 4.2 K and 2 K, in the sum gap region of the I-V characteristics, indicates heating effects.

Original languageEnglish (US)
Article number012
Pages (from-to)146-149
Number of pages4
JournalSuperconductor Science and Technology
Issue number2
StatePublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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