We report NMR measurements of 63Cu spin-lattice relaxation rates, 63(T1T)−1, for magnetic fields of 0, 4, 8.8, and 14.8 T. The measurements were performed on four different samples within the family of near optimally doped YBa2Cu3O7−δ and for the range of temperatures above and below Tc. For each sample we consistently find that, in the normal state, 63Cu spin-lattice relaxation rate is magnetic field independent and that field dependence develops only below Tc where 63(T1T)−1 curves “fan out.” We describe in detail experimental methods enabling the high precision required in such measurements.
|Original language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Jan 22 2001|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics