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Theory of nuclear spin-spin coupling in YBa sub 2 Cu sub 3 O sub 7 minus. delta

Journal Article · · Physical Review Letters; (USA)
;  [1]
  1. Department of Physics and Matreials Research Laboratory, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801 (US)

The indirect nuclear spin-spin coupling between Cu nuclei in the CuO{sub 2} planes of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}, deduced from {sup 63}Cu transverse relaxation, is shown to yield information about the wave-vector dependence of the real part of the planar Cu static electron-spin susceptibility. The coupling is evaluated with no adjustable parameters using the antiferromagnetic Fermi-liquid theory of Millis, Monien, and Pines, providing a new test of that model. At 100 K, the theoretical relaxation time is 190{plus minus}75 {mu}sec versus the experimental 130{plus minus}10 {mu}sec.

DOE Contract Number:
AC02-76ER01198
OSTI ID:
6013733
Journal Information:
Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 66:3; ISSN PRLTA; ISSN 0031-9007
Country of Publication:
United States
Language:
English