Steady State and RF Properties of Proximity Effect Weak Links.
Abstract
A detailed experimental examination of the dc critical supercurrent density, j sub c, and the microwave (nonzero voltage) supercurrent, j sub mu, has been made in proximity effect thin film weak links at temperatures above the transition temperature of the link material. These results were correlated with measured dimensional and superconducting parameters of the thin films and the link via a Ginzberg-Landau (GL) formalism. In the steady state, j sub c, was found to be adequately described by a one dimensional GL formalism similar to that of Likharev and Yakobson but with De Gennes boundary conditions on the order parameter applied at each interface. However, j sub mu decreases exponentially with increasing voltage and can be interpreted in terms of an interference modulation of the induced pair density within the link at the Josephson frequency. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 20, 1979
- Accession Number
- ADA081046
Entities
People
- J. E. Mercereau
- R. P. Mcnamara
Organizations
- California Institute of Technology