Abstract
Elastic, quasielastic, and inelastic neutron scattering measurements in reveal novel two-dimensional antiferromagnetic behavior. At high temperatures the spins are ordered instantaneously over long distances two dimensionally but there is no measurable time-averaged staggered moment. The energy scale of the spin fluctuations is large, corresponding to an effective dispersion of ≳0.4 eV Å. The relevance to the high-temperature superconductivity in this class of materials is noted.
- Received 29 July 1987
DOI:https://doi.org/10.1103/PhysRevLett.59.1613
©1987 American Physical Society