DocumentCode
978665
Title
A new lead alloy for Josephson junctions
Author
Fu, C.Y. ; Duzer, T. Van
Author_Institution
University of California, Berkeley, CA
Volume
17
Issue
1
fYear
1981
fDate
1/1/1981 12:00:00 AM
Firstpage
290
Lastpage
294
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;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1981.1060969
Filename
1060969
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