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Copper and Oxygen NMR Studies on the Magnetic Properties of YBa2Cu3O7-y

  • Masashi Takigawa
Part of the NATO ASI Series book series (NSSB, volume 246)

Abstract

Microscopic magnetic properties of the CuO2 layers in YBa2Cu3O7-y have been investigated from Cu and O NMR experiments on the y≃0 (Tc=92K) and y=0.37 (Tc=62K) materials. The Knight shift at the planar Cu and the planar oxygen sites are found to be proportional to a common spin susceptibility xs which depends on temperature and oxygen-content, strongly supporting a single component spin model for the CUO2 planes. In the y=0.37 material, xs shows a significant reduction with decreasing temperature in the normal state. The nuclear relaxation rate (1/T-1) in the y≃0 material, particularly different behaviors at Cu and O sites, can be accounted for by the hyperfine coupling of Cu and O nuclei to an antiferromagnetically correlated single spin system. Quite different behaviors of 1/T1 were observed in the y=0.37 material, which might be due to combined effects of antiferromagnetic correlations and a temperature-dependent spin susceptibility.

Keywords

Spin Density Hyperfine Coupling Knight Shift Spin Susceptibility Dope Hole 
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.

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References

  1. 1.
    N. Nucker et al., Phys. Rev. B37, 5158 (1988).ADSCrossRefGoogle Scholar
  2. 2.
    A. Bianconi et al., Phys. Rev. B37, 7196 (1988).ADSCrossRefGoogle Scholar
  3. 3.
    P. S. List et al., J. Mag. Mat. 81, 151 (1989).ADSCrossRefGoogle Scholar
  4. 4.
    F. C. Zhang and T. M. Rice, Phys. Rev. B37, 3759 (1988).ADSCrossRefGoogle Scholar
  5. 5.
    V. J. Emery and G. Reiter, Phys. Rev. B38, 11938 (1988).ADSCrossRefGoogle Scholar
  6. 6.
    Y. Nakazawa and M. Ishikawa, Physica C158, 381 (1989).ADSCrossRefGoogle Scholar
  7. 7.
    D. C. Johnston, Phys. Rev. Lett. 62, 957 (1989).ADSCrossRefGoogle Scholar
  8. 8.
    Y. Endoh et al., Phys. Rev. B37, 7443 (1988).ADSCrossRefGoogle Scholar
  9. 9.
    G. Aeppli et al., Phys. Rev. Lett. 62, 2052 (1989).ADSCrossRefGoogle Scholar
  10. 10.
    R. J. Cava et al., Phys. Rev. B36, 5719 (1987).ADSCrossRefGoogle Scholar
  11. 11.
    M. Takigawa et al., Phys. Rev. B39, 300 (1989).ADSCrossRefGoogle Scholar
  12. 12.
    M. Takigawa, P. C. Hammel, R. H. Heffner and Z. Fish, Phys. Rev. B39, 7371 (1989).Google Scholar
  13. 13.
    M. Takigawa et al., Phys. Rev. Lett. 63, 1865 (1989).ADSCrossRefGoogle Scholar
  14. 14.
    M. Takigawa, P. C. Hammel, R. H. Heffner, Z. Fish, K. C. Ott and J. D. Thompson, Proceedings of the M2-HTSC Conference, Stanford, 1989, to be published in Physica.Google Scholar
  15. 15.
    P. C. Hammel et al., Phys. Rev. Lett. 63, 1992 (1989).ADSCrossRefGoogle Scholar
  16. 16.
    S. E. Barrett, D. J. Durand, C. H. Pennington, C. P. Slichter, T. A. Friedman, J. P. Rice and D. M. Ginsberg, preprint.Google Scholar
  17. 17.
    F. Mila and T. M. Rice, Physica C157, 561 (1989).ADSCrossRefGoogle Scholar
  18. 18.
    T. Shimiu, K. Koga, H. Yasuoka T. Tsuda and T. Imai, Bulletin of Magnetic Resonance (Proceedings of the 10th ISMAR Meeting, Morzine, France, 1989) to be published.Google Scholar
  19. 19.
    R. F. Watson and A. J. Freeman, Hyperfine Interaction ed. A. J. Freeman and R. B. Frankel (Academic Press, NY, 1967 ) P. 53.Google Scholar
  20. 20.
    H. Monien, D. Pines and C. P. Slichter, preprint.Google Scholar
  21. 21.
    M. Horvatic et al., Physica C159. 689 (1989).ADSCrossRefGoogle Scholar
  22. 22.
    R. E. Walstedt, W. W. Warren, Jr., R. F. Bell, R. J. Cava, G. P. Espinosa, L. F. Schneemeyer and J. V. Waszczak, preprint.Google Scholar
  23. 23.
    H. Alloul, T. Ohno and D. Mendels, Phys. Rev. Lett. 63, 1700 (1989).ADSCrossRefGoogle Scholar
  24. 24.
    F. Mila and T. M. Rice, unpublished.Google Scholar
  25. 25.
    M. Oda, T. Ohguro, N. Yamada and M. Ido, J. Phys. Soc. Japan 58, 1137 (1989).ADSCrossRefGoogle Scholar
  26. 26.
    T. Moriya, J. Phys. Soc. Japan 18, 516 (1963).Google Scholar
  27. 27.
    T. Imai et al., J. Phys. Soc. Japan 57, 2280 (9188).Google Scholar
  28. 28.
    Y. Kitaoka, S. Hiramatsu, T. Kondo and K. Asayama, J. Phys. Soc. Japan 57, 30 (1988).ADSCrossRefGoogle Scholar
  29. 29.
    R. E. Walstedt, W. W. Warren, Jr., R. F. Bell and G. P. Espinosa, Phys. Rev. B40, 2572 (1989).Google Scholar
  30. 30.
    L. C. Hebel and C. P. Slichter, Phys. Rev. 113, 1504 (1959).ADSCrossRefGoogle Scholar
  31. L. C. Hebel, Phys. Rev. 116, 79 (1959).Google Scholar
  32. 31.
    D. R. Harshman et al., Phys. Rev. B239. 851 (1989).ADSCrossRefGoogle Scholar
  33. 32.
    Y. Kurada and C. M. Varma, preprint.Google Scholar
  34. 33.
    A. J. Millis, H. Monien and D. Pines, preprint; H. Monien, article is this volume.Google Scholar
  35. 34.
    D. L. Cox and M. Tree, preprint.Google Scholar
  36. 35.
    B. S. Shastry, Phys. Rev. Lett. 63, 1288 (1989).ADSCrossRefGoogle Scholar
  37. 36.
    N. Bulut, D. Hone, D. S. Scalapino and N. E. Bickers, preprint; N. Bulut, article in this volume.Google Scholar
  38. 37.
    H. Yasuoka, T. Imai and T. Shimizu, Strong Correlation and Superconductivity, ed. H. Fukuyama, S. Maekawa and A. P. Malozemoff (Springer-Verlag, 1989 ).Google Scholar
  39. 38.
    W. W. Warren, Jr. et al., Phys. Rev. Lett. 62, 1193 (1989).ADSCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1991

Authors and Affiliations

  • Masashi Takigawa
    • 1
  1. 1.Los Alamos National LaboratoryLos AlamosUSA

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