Direct observation of the Riedel singularity in a superconducting point contact
- 1 May 1976
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 28 (9) , 559-561
- https://doi.org/10.1063/1.88823
Abstract
An heterodyne detection of the Josephson current in the gap region is performed using the oscillator-mixer mode of operation in a superconducting point contact. The direct observation of the Riedel peak in a Josephson device is realized. The measured peak height (∼3.5) in superconducting point contacts is of the same order of magnitude as for oxide barrier tunnel junctions. Consequently, strong similarities exist in the physical processes which occur in these two types of junctions and pair tunneling is believed to be a dominant mechanism in a point contact with Josephson behavior.Keywords
This publication has 11 references indexed in Scilit:
- Observation of Riedel-peak in weak linksPhysics Letters A, 1975
- Cosine and other terms in the Josephson tunneling currentPhysical Review B, 1974
- Josephson frequency conversion in the range 145–1600 GHz with Nb–Nb superconducting point contacts used as oscillator-mixerJournal of Applied Physics, 1974
- Riedel Singularity in Sn—Sn-Oxide—Sn Josephson Tunnel JunctionsPhysical Review Letters, 1972
- Experimental Demonstration of the Riedel PeakPhysical Review Letters, 1971
- Current Noise in Josephson Point ContactsPhysical Review Letters, 1970
- SHOT NOISE IN JOSEPHSON POINT CONTACTSApplied Physics Letters, 1970
- Radiation-Induced Structure in the dc Josephson CurrentPhysical Review Letters, 1966
- Nonlinear Self-Coupling of Josephson Radiation in Superconducting Tunnel JunctionsPhysical Review B, 1966
- Possible new effects in superconductive tunnellingPhysics Letters, 1962