Modulation of kinetic inductance of high ic superconducting thin films with bias current

Keiji Enpuku, Masakazu Hoashi, Hideki Doi, Takanobu Kiss

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Kinetic inductance of high tc superconducting thin films is studied using numerical simulation of the Ginzburg-Landau (GL) theory. It is shown that a current distribution in the film changes nonlinearly with a bias current supplied to the film, which results from the nonlinear properties of the GL equation. Using the current distribution, the kinetic inductance of the film is obtained as a function of the bias current. It is shown that the kinetic inductance is constant for low bias currents, and increases nonlinearly with the bias current when the bias current becomes large. The effect of the film geometry on the modulation of the kinetic inductance is quantitatively studied. Analytical solutions for the current distrubiton and the kinetic inductance are also obtained, which agree well with the simulation results. The modulation of the kinetic inductance with the bias current predicted from the theory is partly confirmed from experiments using YBaCuO films.

Original languageEnglish
Pages (from-to)3804-3810
Number of pages7
JournalJapanese Journal of Applied Physics
Volume32
Issue number9 R
DOIs
Publication statusPublished - Jan 1 1993

Fingerprint

Superconducting films
Bias currents
inductance
Inductance
Modulation
modulation
Kinetics
kinetics
thin films
current distribution
Landau-Ginzburg equations
simulation
Geometry
Computer simulation
geometry
Experiments

All Science Journal Classification (ASJC) codes

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

Cite this

Modulation of kinetic inductance of high ic superconducting thin films with bias current. / Enpuku, Keiji; Hoashi, Masakazu; Doi, Hideki; Kiss, Takanobu.

In: Japanese Journal of Applied Physics, Vol. 32, No. 9 R, 01.01.1993, p. 3804-3810.

Research output: Contribution to journalArticle

Enpuku, Keiji ; Hoashi, Masakazu ; Doi, Hideki ; Kiss, Takanobu. / Modulation of kinetic inductance of high ic superconducting thin films with bias current. In: Japanese Journal of Applied Physics. 1993 ; Vol. 32, No. 9 R. pp. 3804-3810.
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