Published October 30, 1989 | Version v1
Journal article

Spin dynamics at oxygen sites in YBa2Cu3O7

  • 1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (USA)

Description

We report NMR measurements of the nuclear relaxation rate at all copper and oxygen sites in magnetically aligned powder samples of YBa2Cu3O7. Comparison of the oxygen and copper relaxation reveals a characteristic temperature greater than Tc. The copper relaxation rate is enhanced by antiferromagnetic copper spin fluctuations which are undiminished in the superconducting state. The absence of a coherence peak indicates that the superconductive pairing is not of the conventional BCS type

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
63
Journal Issue
18
Series
Phys. Rev. Lett.
Journal Page Range
1992-1995
ISSN
0031-9007
CODEN
PRLTA