Crystal-field excitations in multiferroic TbMnO3 by Mn L3 and O K resonant inelastic X-ray scattering
Résumé
d-d excitations in multiferroic TbMnO 3 have been investigated by X-ray absorption spectroscopy and resonant inelastic X-ray scattering at the Mn L 3,2 and O K edges. Confrontation between experimental data and multiplet crystal-field calculations performed for Mn 3þ ions in D 4h symmetry has enabled us to identify the origin of the observed excitations and has provided reliable manganese crystal-field parameters that enter the description of the antisymmetric exchange interaction responsible for the multiferroicity in this compound.
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