Anisotropy and magnetic field dependence of the planar copper NMR spin-lattice relaxation rate in the superconducting state of YBa2Cu3O7

J. A. Martindale, S. E. Barrett, C. A. Klug, K. E. O’Hara, S. M. DeSoto, C. P. Slichter, T. A. Friedmann, and D. M. Ginsberg
Phys. Rev. Lett. 68, 702 – Published 3 February 1992
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Abstract

The authors report mmeasurements of the planar Cu63 nuclear spin-lattice relaxation rates 63W1a (63W1c) for the static field oriented along the a (c) axis in the superconducting state of YBa2Cu3O7. These measurements were made on a single sample as a function of temperature and magnetic field. The weak-field results are well explained by several recent calculations in terms of a BCS spin-singlet, orbital-d-wave pairing state. They also find that at low temperatures 63W1c varies linearly with the applied magnetic field, suggesting that at high field it is dominated by fluxoid cores.

  • Received 29 July 1991

DOI:https://doi.org/10.1103/PhysRevLett.68.702

©1992 American Physical Society

Authors & Affiliations

J. A. Martindale, S. E. Barrett, C. A. Klug, K. E. O’Hara, S. M. DeSoto, C. P. Slichter, T. A. Friedmann, and D. M. Ginsberg

  • Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801

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Vol. 68, Iss. 5 — 3 February 1992

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