1999/11/30 by C. W. M. Castleton, M. Altarelli · 4 citations
Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #High-pressure geophysics and materials #Magnetic and transport properties of perovskites and related materials #X-ray Diffraction in Crystallography #cond-mat
paper · pdf · doi:10.1103/physrevb.62.1033
7 pages inc. 6 postscript figures. Discussion of energy dependence of predicted scattering peaks added, plus other additional comments. Accepted to appear in PRB
arxiv created 2000/06/26 · openalex publication_date 2000/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
It is proposed that the observation of orbital ordering in manganite materials should be possible at the LII and LIII edges of manganese using x-ray resonant scattering. If performed, dipole selection rules would make the measurements much more direct than the disputed observations at the manganese K edge. They would yield specific information about the type and mechanism of the ordering not available at the K edge, as well as permitting the effects of orbital ordering and Jahn-Teller ordering to be detected and distinguished from one another. Predictions are presented based on atomic multiplet calculations, indicating distinctive dependence on energy, as well as on polarization and on the azimuthal angle around the scattering vector.