Effects of microshorts on current-voltage characteristics of josephson tunnel junctions

Keiji Enpuku, Keiji Yoshida, Katsuyoshi Hamasaki, Fujio Irie

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The effects of microshorts on the properties of Josephson tunnel junctions at a finite dc voltage are studied. The disturbance of the electromagnetic field by microshorts and the resulting dc current-voltage characteristics are calculated assuming the RSJ model for the microshorts. It is shown analytically that a microshort gives rise to a current which does not vanish even at a sufficiently high magnetic field, i.e., an excess current. It is also shown that the amplitude of the excess current depends strongly on the ratio of the microshort resistance to the junction impedance seen from the microshort. The observed magnetic-field dependence of the current-voltage characteristics of junctions showing excess currents is explained well by the present analysis.

Original languageEnglish
Pages (from-to)265-275
Number of pages11
JournalJapanese Journal of Applied Physics
Volume20
Issue number1
DOIs
Publication statusPublished - Jan 1981

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Tunnel junctions
Current voltage characteristics
tunnel junctions
Magnetic fields
electric potential
Electromagnetic fields
Electric potential
magnetic fields
electromagnetic fields
disturbances
impedance

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Effects of microshorts on current-voltage characteristics of josephson tunnel junctions. / Enpuku, Keiji; Yoshida, Keiji; Hamasaki, Katsuyoshi; Irie, Fujio.

In: Japanese Journal of Applied Physics, Vol. 20, No. 1, 01.1981, p. 265-275.

Research output: Contribution to journalArticle

Enpuku, Keiji ; Yoshida, Keiji ; Hamasaki, Katsuyoshi ; Irie, Fujio. / Effects of microshorts on current-voltage characteristics of josephson tunnel junctions. In: Japanese Journal of Applied Physics. 1981 ; Vol. 20, No. 1. pp. 265-275.
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