Metallic Weak-Link Character of Grain Boundaries in High-Tc Materials

  • R. Nicolsky
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 113)


The intrinsic current-voltage characteristics (CVC) of high-Tc materials are analysed in the frame of a recent microscopic theory of metallic (nontunnelling) Josephson junctions, suitable for SNS systems. The comparison of the theoretical model with experimental CVC of grain boundaries shows that those intrinsic juntions exhibit the essential features of metallic weak links and definitely do not act as tunnelling junctions. As a consequence, the grain boundaries are also responsible for the presence of intrinsic normal electrons in the superconducting state of high-Tc superconductors.


Grain Boundary Critical Current Density Josephson Junction Pair Potential Normal Metal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    K.A. Müller and G. Deutscher, Phys. Rev. Letts. 59, 1745 (1987).ADSCrossRefGoogle Scholar
  2. [2]
    M. Tinkham, Introduction to Superconductivity (Robert E. Krieger Publishing Co., Malabar, FL, 1985 ), Chap. 6, p. 192.Google Scholar
  3. [3]
    R. Kümmel, U. Gunsenheimer, and R. Nicolsky, Phys. Rev. B42, 3992 (1990), and references therein.Google Scholar
  4. [4]
    J. Mannhart, P. Chaudhari, D. Dimos, C.C. Tsuei, and T.R. McGuire, Phys. Rev. Letts. 61, 2476 (1988).ADSCrossRefGoogle Scholar
  5. [5]
    Z. Ivanov and T. Gleason, Physica B165–166, 69 (1990).Google Scholar
  6. [6]
    R. Gross, P. Chaudhari, D. Dimos, A. Gupta, and G. Koren, Phys. Rev. Letts. 64, 228 (1990).ADSCrossRefGoogle Scholar
  7. [7]
    R. Kleiner, F. Steinmeyer, G. Kunkel, and P. Müller, Phys. Rev. Letts. 68, 2394 (1992).ADSCrossRefGoogle Scholar
  8. [8]
    R. Nicolsky, Cryogenics 29, 388 (1989).ADSCrossRefGoogle Scholar
  9. [9]
    R. Nicolsky, Physica C185–189, 2611 (1991).Google Scholar
  10. [10]
    R. Nicolsky, L. Ghivelder, P. Rodrigues Jr., P. Pureur, and S. Reich, to be published.Google Scholar
  11. [11]
    S. Reich and I. Feiner, J. Appl. Phys. 67, 388 (1990).ADSCrossRefGoogle Scholar
  12. [12]
    J. Bardeen and J.L. Johnson, Phys. Rev. B5, 72 (1972).ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin, Heidelberg 1993

Authors and Affiliations

  • R. Nicolsky
    • 1
  1. 1.Instituto de FísicaUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil

Personalised recommendations