Title :
A new lead alloy for Josephson junctions
Author :
Fu, C.Y. ; Duzer, T. Van
Author_Institution :
University of California, Berkeley, CA
fDate :
1/1/1981 12:00:00 AM
Abstract :
We have investigated a new ternary superconducting alloy applicable to Josephson junction circuit fabrication. The alloy is composed of lead, chromium, and gold. The energy gap of the alloy, based on derivative measurements on tunneling junctions, is approximately 2.64 meV at 4.2 K and the superconducting transition temperature is 7.6 K. Tunneling-junction characteristics based on this new alloy show very low subgap leakage and are suitable for logic and mixing applications. The alloy is strongly corrosion-resistant and adheres well to silicon and glass substrates.
Keywords :
Josephson device logic circuits; Josephson device mixers/frequency converters; Superconducting materials; Chromium alloys; Circuits; Energy measurement; Fabrication; Gold alloys; Josephson junctions; Lead; Superconducting materials; Superconducting transition temperature; Tunneling;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1981.1060969
