Orbital Ordering in the Manganites :- Resonant X-ray Scattering Predictions at the Manganese L_II and L_III Edges

Details Orbital Ordering in the Manganites :- Resonant X-ray Scattering Predictions at the Manganese L_II and L_III Edges Orbital Ordering in the Manganites :- Resonant X-ray Scattering Predictions at the Manganese L_II and L_III Edges

1999-11-26

arxiv.org/abs/cond-mat/9911434v2

Physics

Condensed Matter

7 pages inc. 6 postscript figures. Discussion of energy dependence of predicted scattering peaks added, plus other additional

Scientific paper

10.1103/PhysRevB.62.1033

It is proposed that the observation of orbital ordering in manganite materials should be possible at the L_II and L_III 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.

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