Journal of Low Temperature Physics

, Volume 105, Issue 5–6, pp 1249–1254 | Cite as

Resonant tunneling and perpendicular conduction in cuprate conductors with varying O-content

  • J. Halbritter
Josephson Effects and Tunneling

Abstract

Anisotropy is inherent to layered cuprates with conduction mainly confined to the CuO2-planes, claimed to be the source of superconductivity. Resonant tunnel exchange for conduction parallel and perpendicular to the CuO2-planes shows different normal and superconducting properties by charging energies and localizations at the in-plane perturbations being atomic-like and between the CuO2-planes, being extended. By overdoping the wave function overlap in perpendicular direction via the extended states grows, especially in the superconducting state. The counteraction of overlap and charging energies yield activated resonant tunneling, i.e. the pseudo gap, in the normal state and Josephson tunneling in the superconducting state.

PACS numbers

73.40.6K 74.20 Mn 74.72. −h 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    J. Halbritter, Phys. Rev.B 46, 14861 (1992)Google Scholar
  2. 2.
    A. Marx, et al. Phys. Rev.B 51, 6735 (1995)Google Scholar
  3. 3.
    T. Amrein et al., Phys. Rev.B 51, 6792 (1995)Google Scholar
  4. 4.
    S. C. Sanders et al., Appl. Phys. Lett.65, 2232 (1994)Google Scholar
  5. 5.
    J. Halbritter, Phys. Rev.B 48, 9735 (1993)Google Scholar
  6. 6.
    J. Halbritter, Proc. Workshop on HTS Josephson Junctions, May, 1994 (Uni of Twente, NL75 Enschede), p. 30 and submittedGoogle Scholar
  7. 7. a.
    J. Halbritter, Surface Science122, 80 (1982)Google Scholar
  8. 7. b.
    J. Halbritter, J. Appl. Phys.58, 1320 (1985)Google Scholar
  9. 7. c.
    J. Halbritter, to be publishedGoogle Scholar
  10. 8.
    R. Kleiner and P. Müller, Phys. Rev.B 49, 1327 (1994)Google Scholar
  11. 9.
    L. Forro et al., Phys. Rev.B 46, 6626 (1992)Google Scholar
  12. 10.
    J. D. Hettinger et al., Phys. Rev. Lett.74, 4726 (1995)Google Scholar
  13. 11.
    S. I. Cooper, K. E. Gray, Physical Properties of High Temperature Superconductors (D. Ginsberg, Work Scientific, Singapore, 1994)Google Scholar
  14. 12.
    V. Kresin et al., Phys. Rev.B 46, 6458 (1992)Google Scholar
  15. 13. a.
    S. L. Cooper et al., Phys. Rev. Lett.70 1533 (1993)Google Scholar
  16. 13. b.
    S. Tagimat et al., Solid State Comm.95, 759 (1995)Google Scholar
  17. 14.
    T. Hasegawa et al., J. Phys. Chem. Solids54, 1351 (1993). The semiconducting gap opening at 0.1 eV reported there, seem to be due to the off-site Coulomb charging ΔU* >0.1 eV in tunneling.Google Scholar
  18. 15.
    I. Bozovic et al., J. Supercond.5, 2521 (1995)Google Scholar
  19. 16.
    B. A. Aminov et al., Phys. Rev.B 52, 13631 (1995)Google Scholar
  20. 17.
    G. Repphun, J. Halbritter, J. Vac. Sci. Techn.A 13, 1693 (1995)Google Scholar
  21. 18.
    Ch. Renner and O. Fischer, Phys.Rev.B51, 9208 (1995)Google Scholar
  22. 19.
    e. g., H. L. Edwards et al., Phys. Rev. Lett.69, 2967 (1992)Google Scholar
  23. 20.
    K. Geyer et al. J. Appl. Phys.76, 7774 (1994)Google Scholar
  24. 21.
    J. H. Yu et al., Phys. Rev. Lett.73, 2492 (1994)Google Scholar
  25. 22.
    A. T. Liechtenstein et al., J. Phys. Chem. Solids56, 1573 (1995)Google Scholar
  26. 23.
    A. A. Abrikosov, Phys. Rev.B 52, R 7026 (1995); T. Timusk et al., J. Phys. Chem. Solids56, 1821 (1995)Google Scholar
  27. 24.
    R. Kleiner et al., Phys. Rev. Lett.76, 2161 (1996)Google Scholar
  28. 25.
    A. Yurgens et al., Phys. Rev.B 53, R 8887 (1996)Google Scholar
  29. 26.
    K. Tanabe et al., Phys. Rev.B 53, 9348 (1996)Google Scholar
  30. 27.
    W. A. Atkinson, J. P. Carbotte, Phys. Rev.B 52, 10601 (1995)Google Scholar
  31. 28.
    Y. Ando et al., Phys Rev. Lett.75, 4662 (1995); Ahih-Ying Hsu and J. M. Valles, Phys. Rev. Lett74, 2331 (1995)Google Scholar

Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • J. Halbritter
    • 1
  1. 1.Institut für Materialforschung IForschungszentrum KarlsruheKarlsruheGermany

Personalised recommendations