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NMR and NQR in Highly Correlated Metallic and Superconducting Cu Oxides

  • H. Yasuoka
  • T. Imai
  • T. Shimizu
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 89)

Abstract

In order to understand the exotic Cu spin dynamics in the normal (metallic) state of the high-Tc and related metallic Cu oxides, the measurements of the NQR frequency spectra and the nuclear spin-lattice relaxation have been utilized. A sizable charge differentiation in the Cu-O plane sites is found even in the metallic phases of YBa2Cu3Oy and La2−xSrxO4. From the temperature dependence of the relaxation rate 1/T1, it is found that highly enhanced relaxation process exists in the high-Tc oxides. The data are also exhibiting of the opening of a gap in the low-lying excitations with an energy comparable to the superconducting gap.

Keywords

Spin Dynamic YBCO System Local Spin Fluctuation High Frequency Site Electron Hole Pair Excitation 
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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Copyright information

© Springer-Verlag Berlin, Heidelberg 1989

Authors and Affiliations

  • H. Yasuoka
    • 1
  • T. Imai
    • 1
  • T. Shimizu
    • 1
  1. 1.Institute for Solid State PhysicsUniversity of TokyoRoppongi, Tokyo 106Japan

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