Experimental investigation of the magnetic behavior of superconducting- normal-superconducting Josephson junctions

K. Bures, Stewart Barnes, K. Baberschke

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We have measured the magnetic field dependence of the supercurrent in micron-size medium and high current density superconducting-normal- superconducting Nb-Au-Nb Josephson junctions. We find good quantitative agreement between the experiment and a theory for the distributed Josephson effect in such junctions. For finite bias voltages, high current density junctions show a monotonic decrease in the effective critical current with increasing field in sharp contrast to the resistively shunted junction model which predicts the well-known Fresnel-type behavior. Our medium current density junctions represent an intermediate case, residual Fresnel behavior is observed at small bias voltages, but a monotonic decrease with the field is observed for higher bias voltages.

Original languageEnglish (US)
Pages (from-to)7073-7077
Number of pages5
JournalJournal of Applied Physics
Volume54
Issue number12
DOIs
StatePublished - 1983
Externally publishedYes

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Josephson junctions
current density
high current
electric potential
Josephson effect
critical current
magnetic fields

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Experimental investigation of the magnetic behavior of superconducting- normal-superconducting Josephson junctions. / Bures, K.; Barnes, Stewart; Baberschke, K.

In: Journal of Applied Physics, Vol. 54, No. 12, 1983, p. 7073-7077.

Research output: Contribution to journalArticle

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