Abstract
In a recent publication Larson et al. reported remarkably clear excitations for NiO and CoO with x-ray scattering. Here we present an accurate quantitative description based on a local many body approach, beyond local density approximation Hubbard U approximations. The magnitude of determines which of the allowed multipoles contributes most to the spectra. The direction of with respect to the crystal can be used as an equivalent to polarization similar to electron energy loss spectroscopy, allowing for a determination of the local symmetry of the initial and final states. This method is more generally applicable and could be a powerful tool for the study of local distortions and symmetries in transition metal and rare earth compounds.
- Received 18 May 2007
DOI:https://doi.org/10.1103/PhysRevLett.99.257401
©2007 American Physical Society