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Preliminary Results on YBCO/Nb Bulk Junction

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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.

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Authors and Affiliations

  1. Dipartimento di Fisica N.S.M.A., Università di Napoli, P.le Tecchio, Napoli, and INFN Sezione di Napoli, Italy

    A. Barone, A. Di Chiara, G. Peluso & G. Pepe

  2. Istituto di Cibernetica del CNR, Via Toiano 6, Arco Felice, Napoli, Italy

    A. Barone, M. Russo & U. Scotti Di Uccio

Authors
  1. A. Barone
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  2. A. Di Chiara
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  3. G. Peluso
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  4. G. Pepe
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  5. M. Russo
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  6. U. Scotti Di Uccio
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Barone, A., Di Chiara, A., Peluso, G. et al. Preliminary Results on YBCO/Nb Bulk Junction. MRS Online Proceedings Library 99, 869–872 (1987). https://doi.org/10.1557/PROC-99-869

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