Mechanism of the Resonant X-Ray Scattering at the K Edge in Transition-Metal Compounds : Relation to Orbital Ordering(Current Topic)

Abstract

The resonant X-ray scattering at the K-edge of transition metals is one of the most powerful tools to investigate spacially varying long-range orders by observing the scattering intensities at forbidden Bragg spots. The present article elucidates the mechanism of the scattering intensities and the relation to order parameters on the basis of ab-initio band structure calculations. The scattering intensities can be understood from the viewpoint of the delocalized property of transition-metal 4p wavefunction.