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).
|Journal||Japanese journal of applied physics|
|Publication status||Published - 1990 Oct|
- High-7c superconductor
- Shapiro step
- Submillimeter wave
ASJC Scopus subject areas
- Physics and Astronomy(all)