Submillimeter-wave response of nb-ybacuo point-contact josephson junctions using ybacuo thin films prepared by cvd

Syozo Imai, Nobuhiro Sugawara, Kazushige Sumiya, Kimihiko Ito, Nobuo Mikoshiba, Hisanori Yamane, Toshio Hirai, Hideyuki Kurosawa, Tsutomu Yamashita

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The Shapiro steps in the submillimeter wave (SMMW) region were measured in point-contact Josephson junctions made of a Nb strip with a sharpened edge and a YBaCuO thin film. The thin film was prepared by the chemical vapor deposition (CVD) method. The dependence of the Shapiro step width on the SMMW power was measured for the wavelength of 570.6 µm (525.4 GHz). The dependence was similar to that found in microbridges made of low Tcsuperconductors. The first-order Shapiro step was observed for the wavelength of 232.9 µm (1.287 THz).

Original languageEnglish
Pages (from-to)L1778-L1780
JournalJapanese journal of applied physics
Volume29
Issue number10
DOIs
Publication statusPublished - 1990 Oct

Keywords

  • CVD
  • High-7c superconductor
  • Shapiro step
  • Submillimeter wave

ASJC Scopus subject areas

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

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