Magnetic field independence of Cu(2) NMR spin-lattice relaxation rate in the normal state of optimally doped YBa2Cu3O7−δ

K. R. Gorny, O. M. Vyaselev, C. H. Pennington, P. C. Hammel, W. L. Hults, J. L. Smith, J. Baumgartner, T. R. Lemberger, P. Klamut, B. Dabrowski

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5 Scopus citations

Abstract

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 languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number6
DOIs
StatePublished - Jan 22 2001

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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