High-frequency behavior of ideal superconducting point contacts

Citation:

Weitz, D. A. ; Skocpol, W. J. ; Tinkham, M. High-frequency behavior of ideal superconducting point contacts. Physical Review Letters 1978, 40, 253-256. Copy at http://www.tinyurl.com/yxq32r96
weitz1978.pdf660 KB

Abstract:

We have studied niobium point contacts which are very consistent and reproducible from junction to junction, in both their dc and high-frequency behavior. We find a strong correlation between the sharpness of the gap structure and the ac Josephson effect, and we present the first quantitative measurements of the far-infrared frequency dependence of the Josephson effect above the energy gap. The measured I−V curves are also compared with available theoretical models.

Publisher's Version

Last updated on 07/09/2021