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Investigation of the Josephson Effect in Y(Yb)Ba2Cu3O7−y Single Crystal Break Junctions

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Advances in Superconductivity VII

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Abstract

We have studied the I(V)-characteristics of break junctions in Y(Yb)Ba2Cu3O7−y single crystals. For a YBaCuO Josephson junction with a critical supercurrent density jc=6·102 A/cm2 at T= 4.2K a Fraunhofer-like magnetic field dependence of the critical current Ic and Fiske resonances in low magnetic fields have been observed in the I(V)-characteristic. The velosity of the electromagnetic wave in the contact area c* (Swihart velosity) has been calculated c*/c ≈ 0.018. The ratio of the barrier thickness dI to the relative dielectric constant of the barrier a was found to be dI / ε ≈ 0.09 nm.

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Authors and Affiliations

  1. Fachbereich Physik, Universität Wuppertal, 42097, Wuppertal, Germany

    G. Müller, B. A. Aminov, M. A. Hein, H. Piel & D. Wehler

  2. Physics Faculty, Moscow State University, 119899, Moscow, Russia

    Ya. G. Ponomarev

Authors
  1. G. Müller
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  2. Ya. G. Ponomarev
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  3. B. A. Aminov
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  4. M. A. Hein
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  5. H. Piel
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  6. D. Wehler
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Editor information

Editors and Affiliations

  1. Department of Electronics, Faculty of Engineering, Kyushu University, Higashi-Ku, Fukuoka 812, Japan

    Kaoru Yamafuji

  2. Superconductivity Research Laboratory, ISTEC, Koto-ku, Tokyo 135, Japan

    Tadataka Morishita

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© 1995 Springer-Verlag Tokyo

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Müller, G., Ponomarev, Y.G., Aminov, B.A., Hein, M.A., Piel, H., Wehler, D. (1995). Investigation of the Josephson Effect in Y(Yb)Ba2Cu3O7−y Single Crystal Break Junctions. In: Yamafuji, K., Morishita, T. (eds) Advances in Superconductivity VII. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68535-7_4

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  • DOI: https://doi.org/10.1007/978-4-431-68535-7_4

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-68537-1

  • Online ISBN: 978-4-431-68535-7

  • eBook Packages: Springer Book Archive

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