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.
Keywords
All Related Versions
This publication has 25 references indexed in Scilit:
- Unconventional Superconductivity and Electron Correlations in the Cobalt Oxyhydrate from Nuclear Quadrupole ResonancePhysical Review Letters, 2004
- Unconventional Superconductivity and Nearly Ferromagnetic Spin Fluctuations in NaxCoO2·yH2OJournal of the Physics Society Japan, 2003
- Instabilities of interacting electrons on the triangular latticePhysical Review B, 2003
- Superconductivity inlayers and the resonating valence bond mean-field theory of the triangular latticemodelPhysical Review B, 2003
- Electronic Model forLayer Based Systems: Chiral Resonating Valence Bond Metal and SuperconductivityPhysical Review Letters, 2003
- Superconducting States in Frustratingt–JModel: A Model Connecting High-TcCuprates, Organic Conductors and NaxCoO2Journal of the Physics Society Japan, 2003
- Superconductivity phase diagram of NaxCoO2·1.3H2ONature, 2003
- Spin entropy as the likely source of enhanced thermopower in NaxCo2O4Nature, 2003
- Superconductivity in two-dimensional CoO2 layersNature, 2003
- Large thermoelectric power insingle crystalsPhysical Review B, 1997