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Preliminary Results on YBCO/Nb Bulk Junction

Published online by Cambridge University Press:  28 February 2011

A. Barone ,
A. Di Chiara ,
G. Peluso ,
G. Pepe ,
M. Russo  and
U. Scotti Di Uccio
A. Barone
Affiliation:
Dipartimento di Fisica N.S.M.A., Università di Napoli, P.le Tecchio, Napoli, and INFN Sezione di Napoli, Italy Istituto di Cibernetica del CNR, Via Toiano 6, Arco Felice, Napoli, Italy
A. Di Chiara
Affiliation:
Dipartimento di Fisica N.S.M.A., Università di Napoli, P.le Tecchio, Napoli, and INFN Sezione di Napoli, Italy
G. Peluso
Affiliation:
Dipartimento di Fisica N.S.M.A., Università di Napoli, P.le Tecchio, Napoli, and INFN Sezione di Napoli, Italy
G. Pepe
Affiliation:
Dipartimento di Fisica N.S.M.A., Università di Napoli, P.le Tecchio, Napoli, and INFN Sezione di Napoli, Italy
M. Russo
Affiliation:
Istituto di Cibernetica del CNR, Via Toiano 6, Arco Felice, Napoli, Italy
U. Scotti Di Uccio
Affiliation:
Istituto di Cibernetica del CNR, Via Toiano 6, Arco Felice, Napoli, Italy
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Abstract

Current-voltage characteristics and dV/dI curves of a YBCO/Nb bulk junction at 4.2 K are reported. The presence of the Josephosn effect is clearly shown. The dV/dI spectrum shows sharp structures which can be related to the Niobium and the YBCO energy gaps Δnb and ΔNb and ΔYBCO. A value ΔYBCO = 26.2 ± 1.0 meV can be estimated, confirming the strong coupling character of such a compound.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 869
Copyright
Copyright © Materials Research Society 1988

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References

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