Hyperfine Interactions

, Volume 79, Issue 1–4, pp 867–872 | Cite as

Copper NQR study of the La 214 system from an aspect of microscopic environment of copper

  • K. Yoshimura
  • T. Uemura
  • M. Kato
  • K. Kosuge
  • T. Imai
  • H. Yasuoka
Section III.5: High Tc Superconductivity

Abstract

The nuclear quadrupole resonance (NQR) has been investigated for Cu in La2−xA x CuO y (A=Sr and Ba). Three Cu NQR lines, A, B and C, have been observed, which correspond to three different Cu sites. From the analysis of these NQR intensities, site assignments are possibly as follows. These lines A, B and C are attributed to CuO6 octahedral, CuO5 pyramidal and CuO4 planar sites, respectively. The apical oxygen O(2) is induced to transfer to the interstitial O(3) site between LaO planes when two or more Sr2+ ions are located in its neighboring La sites. The excess holes doped into the CuO2 plane are provided mainly by O(3) as well as the unpaired Sr2+ ion.

Keywords

Oxygen Copper Thin Film Nuclear Quadrupole Resonance CuO2 Plane 
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]
    R.J. Cava et al, Phys. Rev. Lett. 58 (1987) 408.Google Scholar
  2. [2]
    J.B. Torrance et al., Phys. Rev. Lett. 61 (1988) 1127.Google Scholar
  3. [3]
    H. Takagi et al., Phys. Rev. B 40 (1989) 2254.Google Scholar
  4. [4]
    K. Yoshimura et al., J. Phys. Soc. Japan 59 (1990) 3073.Google Scholar
  5. [5]
    T. Uemura et al., J. Phys. Soc. Japan 60 (1991) 1298.Google Scholar
  6. [6]
    J.D. Jorgensen et al., Phys. Rev. B 38 (1988) 11337.Google Scholar
  7. [7]
    J.D. Jorgensen et al., Phys. Rev. B 40 (1988) 2187.Google Scholar
  8. [8]
    Z. Tan et al., Phys. Rev. Lett. 64 (1990) 2715.Google Scholar
  9. [9]
    K. Yoshimura et al., J. Phys. Soc. Japan 58 (1989) 3057.Google Scholar
  10. [10]
    K. Kumagai and Y. Nakamura, Physica C 157 (1989) 307.Google Scholar
  11. [11]
    Y. Nakamura and K. Kumagai, Physica C 165/166 (1990) 1303.Google Scholar
  12. [12]
    Y. Kitaoka et al., Physica C 170 (1990) 189.Google Scholar
  13. [13]
    T. Tsuda et al., J. Phys. Soc. Japan 57 (1988) 2908.Google Scholar
  14. [14]
    T.R. Thurston et al., Phys. Rev. B 40 (1989) 4585.Google Scholar

Copyright information

© J.C. Baltzer AG, Science Publishers 1993

Authors and Affiliations

  • K. Yoshimura
    • 1
  • T. Uemura
    • 1
  • M. Kato
    • 1
  • K. Kosuge
    • 1
  • T. Imai
    • 1
    • 2
  • H. Yasuoka
    • 1
    • 2
  1. 1.Department of Chemistry, Faculty of ScienceKyoto UniversityKyotoJapan
  2. 2.Institute for Solid State PhysicsUniversity of TokyoTokyoJapan

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