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Ac-Josephson effect in YBa2Cu3O7/YBa2Cu3O7 point contact junctions

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Zeitschrift für Physik B Condensed Matter

Abstract

The ac-Josephson effect could be demonstrated up to dc voltages of 20 mV on the I–V characteristic of adjustable YBa2Cu3O7/YBa2Cu3O7 point contacts at 4.2 K. A detailed analysis of the rf power dependence of the size of microwave-induced constant voltage steps is given for microwave frequencies of 70 and 90 GHz. The results prove that electron pairing is responsible for the superconductivity in YBa2Cu3O7.

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Authors and Affiliations

  1. Physikalisch-Technische Bundesanstalt, Bundesallee 100, D-3300, Braunschweig, Federal Republic of Germany

    J. Niemeyer

  2. National Physical Laboratory, Dr. K.S. Krishnan Road, 110012, New Delhi, India

    N. D. Kataria

  3. Kernforschungszentrum Karlsruhe, Institut für Technische Physik, Postfach 3640, D-7500, Karlsruhe, Federal Republic of Germany

    M. R. Dietrich

  4. Kernforschungszentrum Karlsruhe, Institut für Nukleare Festkörperphysik, Postfach 3640, D-7500, Karlsruhe, Federal Republic of Germany

    C. Politis

  5. Physikalisch-Technische Bundesanstalt, Abbestrasse 10-12, D-1000, Berlin, Germany

    H. Koch

  6. Institut für Anorganische und Analytische Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, D-1000, Berlin, Germany

    R. Schöllhorn & H. Eickenbusch

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  1. J. Niemeyer
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  2. N. D. Kataria
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  3. M. R. Dietrich
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  4. C. Politis
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  5. H. Koch
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  6. R. Schöllhorn
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  7. H. Eickenbusch
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Niemeyer, J., Kataria, N.D., Dietrich, M.R. et al. Ac-Josephson effect in YBa2Cu3O7/YBa2Cu3O7 point contact junctions. Z. Physik B - Condensed Matter 69, 1–9 (1987). https://doi.org/10.1007/BF01560602

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  • DOI: https://doi.org/10.1007/BF01560602

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