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Physics and Materials Science of High Temperature Superconductors, IV pp 115–126Cite as

Anisotropic Josephson Junctions on Stepped Surfaces of Bi2Sr2CaCu2O8 Crystals: Evidence for the Symmetry of the Pair Wave Function

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Part of the book series: NATO ASI Series ((ASHT,volume 26))

Abstract

BiSrCaCuO/Ag/Pb proximity effect junctions have been made on both microscopically flat regions of the c-axis face and along a-axis edges of large cleavage steps of single-crystal 2212 BiSrCaCuO. The resistances of these junctions are determined by the Ag/BiSrCaCuO interface. The crystal face junctions show a tunneling-like characteristic and clear evidence for the BiSrCaCuO energy gap, but no detectable Josephson coupling. The step face junctions show a linear I-V curve and a well-defined Josephson coupling with an IcR product ≈ 4meV. These results are discussed in the light of current proposals for the symmetry of the pair wave function. Absence of coupling along c-axis and strong coupling along a-axis is interpreted as evidence for d-wave symmetry.

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Author information

Authors and Affiliations

  1. Department of Physics, Hacettepe University, Beytepe, Ankara, 06532, Turkey

    H. Z. Durusoy

  2. Department Of Applied Physics, Stanford University, Stanford, CA, 94305, USA

    M. R. Beasley

Authors
  1. H. Z. Durusoy
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  2. M. R. Beasley
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Editor information

Editors and Affiliations

  1. Emerging Technologies, Inc., Pittsburgh, Pennsylvania, USA

    Ram Kossowsky

  2. Physics Institute, Czech Academy of Science, Prague, Czech Republic

    Miroslav Jelinek

  3. Institute of Electrical Engineering, Slovak Academy of Science, Bratislava, Slovak Republic

    Josef Novak

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© 1997 Springer Science+Business Media Dordrecht

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Durusoy, H.Z., Beasley, M.R. (1997). Anisotropic Josephson Junctions on Stepped Surfaces of Bi2Sr2CaCu2O8 Crystals: Evidence for the Symmetry of the Pair Wave Function. In: Kossowsky, R., Jelinek, M., Novak, J. (eds) Physics and Materials Science of High Temperature Superconductors, IV. NATO ASI Series, vol 26. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5732-2_8

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  • DOI: https://doi.org/10.1007/978-94-011-5732-2_8

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-6417-0

  • Online ISBN: 978-94-011-5732-2

  • eBook Packages: Springer Book Archive

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