Using an original modulation technique, the longitudinal (spin-lattice) relaxation of the impurity (Formula presented) ions has been investigated in the superconducting state of (Formula presented) magnetically aligned powders. The results agree well with the linewidth analysis performed on a single crystal. At low temperatures (Formula presented) the relaxation rate (Formula presented) is found to be proportional to (Formula presented) suggesting d-wave superconducting pairing. The data are consistent with previous Knight shift (Formula presented) measurements that revealed a linear temperature dependence of the uniform spin susceptibility. The Korringa relation between (Formula presented) and (Formula presented) is confirmed indicating the validity of the Fermi-liquid model.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - Jan 1 2000|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics