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Temperature dependence of the maximum Josephson current in Nb-NbO x -Sn junctions

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Abstract

The measured temperature variation of the maximum zero-field dc Josephson current for small Nb-NbO x -Sn junctions falls slightly under the Ambegaokar-Baratoff theoretical curve for temperatures nearT c(Sn). This is consistent with measurements on Nb-NbO x -Pb junctions and may be due to proximity effects at the Nb surface.

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Author notes

  1. P. Rissman

    Present address: Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin

Authors and Affiliations

  1. Istituto di Fisica, Università di Salerno, Salerno, Italy

    R. D. Parmentier, G. Costabile & P. Rissman

  2. Laboratori Nazionali del CNEN, Frascati, Italy

    E. P. Balsamo

Authors
  1. R. D. Parmentier
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  2. G. Costabile
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  3. P. Rissman
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  4. E. P. Balsamo
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Additional information

Work supported in part by the Gruppo Nazionale di Struttura della Materia.

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Parmentier, R.D., Costabile, G., Rissman, P. et al. Temperature dependence of the maximum Josephson current in Nb-NbO x -Sn junctions. J Low Temp Phys 22, 529–533 (1976). https://doi.org/10.1007/BF00659058

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  • DOI: https://doi.org/10.1007/BF00659058

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