Ferromagnetic In-Plane Spin Fluctuations inObserved by Neutron Inelastic Scattering
- 13 May 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 92 (19), 197201
- https://doi.org/10.1103/physrevlett.92.197201
Abstract
We present neutron scattering spectra taken from a single crystal of , the precursor to a novel cobalt-oxide superconductor. The data contain a prominent inelastic signal at low energies (), which is localized in wave vector about the origin of two-dimensional reciprocal space. The signal is highly dispersive, and decreases in intensity with increasing temperature. We interpret these observations as direct evidence for the existence of ferromagnetic spin fluctuations within the cobalt-oxygen layers.
Other Versions
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