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Superconducting Mbtallic Supkrlattices

Published online by Cambridge University Press:  26 February 2011

Charles M. Falco ,
Ruggero Vaglio  and
Annamaria Cucolo
Charles M. Falco
Affiliation:
Departments of Physics and of Optical Sciences and in Arizona Research Laboratories, University of Arizona, Tucson, AZ 85721
Ruggero Vaglio
Affiliation:
Dipartimento di Fisica, Universita’ di Salerno, 84100 Salerno, Italy
Annamaria Cucolo
Affiliation:
Dipartimento di Fisica, Universita’ di Salerno, 84100 Salerno, Italy
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Abstract

Since the coherence length is of order 50 Å to 1 μm, it is possible to alternately layer thin films of a superconductor with another material to affect the physical properties of the resulting superlattice. A brief description of our sputtering technique used to prepare superlat t ices consisting of Nb/Cu and Ta/Mo is given. Optical interferometry, x-ray diffraction and ion beam analysis techniques independently confirm that control of ±0.3% is achieved over the amount of material deposited in each layer. Results of a study of Josephson tunneling to Nb/Cu metallic super lattices are reviewed. These measurements enable a determination of the London penetration depth to be made as a function of superlattice layer thickness.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 77: Symposium D – Interfaces, Superlattices, and Thin Films , 1986 , 83
Copyright
Copyright © Materials Research Society 1987

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References

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