Fabrication and Josephson behavior of high- T c superconductor-normal-superconductor microbridges

We describe a simple new technique for fabricating superconductor-normal metal-superconductor (SNS) microbridges that allows the use of high-Tc materials. We have used this technique to make the first high-Tc SNS microbridges, incorporating Nb3Ge, Nb3Sn, and Nb as the superconductor, and Cu and Au a...

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Bibliographic Details
Published in:Applied physics letters 1983-03, Vol.42 (6), p.541-543
Main Authors: de Lozanne, A., DiIorio, M. S., Beasley, M. R.
Format: Article
Language:English
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Summary:We describe a simple new technique for fabricating superconductor-normal metal-superconductor (SNS) microbridges that allows the use of high-Tc materials. We have used this technique to make the first high-Tc SNS microbridges, incorporating Nb3Ge, Nb3Sn, and Nb as the superconductor, and Cu and Au as the normal metal. These devices have a Tc up to 19 K and exhibit very good electrical characteristics over a wide range of temperatures. Both the dc and the ac Josephson effects are clearly displayed by these junctions.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.93998