Abstract
We investigated the electronic structure of a layered in a metallic regime using a polarization dependent O x-ray absorption spectroscopy. The spectrum shows strong variations with the polarization especially in Ru region, which enables us to identify the electronic states. The spectral line shape gradually changes with increase of Sr concentration, and agrees well with an unrestricted Hartree-Fock analysis, which suggests evolution of the orbital states and provides clues for how the lattice distortion affects the orbital occupations.
- Received 25 November 2004
DOI:https://doi.org/10.1103/PhysRevB.72.052411
©2005 American Physical Society