Controllable superconducting Nb long microbridge by low frequency, and its resonant characteristics

Keiji Tsukada, Toshimitsu Morooka

Research output: Contribution to journalArticle

Abstract

A Nb superconducting microbridge is fabricated, 40-μm long, less than 0.25-μm wide and 0.1-μm thick. Four-terminal measurement of the I-V characteristics reveals hysterisis in the I-V curve. The microbridge has an excess current over its current in its normal state. Frequency resonance appears over the range of a few hundred kiloherz by electromagnetic wave radiation. The I-V characteristics show that critical current Ic is depressed, and as radiation power increases Ic decreases. This phenomenon is thought to be due to resonance of quasiparticles in the microbridge, and to resonance restricting the supercurrent.

Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume31
Issue number11 A
Publication statusPublished - Nov 1 1992
Externally publishedYes

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low frequencies
electromagnetic radiation
Radiation
Critical currents
Electromagnetic waves
critical current
curves
radiation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Controllable superconducting Nb long microbridge by low frequency, and its resonant characteristics. / Tsukada, Keiji; Morooka, Toshimitsu.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 31, No. 11 A, 01.11.1992.

Research output: Contribution to journalArticle

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