High-Frequency Behavior of "Ideal" Superconducting Point Contacts
- 23 January 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 40 (4), 253-256
- https://doi.org/10.1103/physrevlett.40.253
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 curves are also compared with available theoretical models.
Keywords
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