High-resolution resonant inelastic extreme ultraviolet scattering from orbital and spin excitations in a Heisenberg antiferromagnet

We report a high-resolution resonant inelastic extreme ultraviolet (EUV) scattering study of the quantum Heisenberg antiferromagnet KCoF3. By tuning the EUV photon energy to the cobalt M23 edge, a complete set of low-energy 3d spin-orbital excitations is revealed. These low-lying electronic excitati...

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Bibliographic Details
Published in:Physical review. B 2017-11, Vol.96 (18), Article 184420
Main Authors: Caretta, Antonio, Dell'Angela, Martina, Chuang, Yi-De, Kalashnikova, Alexandra M., Pisarev, Roman V., Bossini, Davide, Hieke, Florian, Wurth, Wilfried, Casarin, Barbara, Ciprian, Roberta, Parmigiani, Fulvio, Wexler, Surge, Wray, L. Andrew, Malvestuto, Marco
Format: Article
Language:English
Subjects:
Antiferromagnetism
High resolution
Inelastic scattering
Line shape
Line spectra
Magnetism
Temperature dependence
X-ray scattering
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Summary:We report a high-resolution resonant inelastic extreme ultraviolet (EUV) scattering study of the quantum Heisenberg antiferromagnet KCoF3. By tuning the EUV photon energy to the cobalt M23 edge, a complete set of low-energy 3d spin-orbital excitations is revealed. These low-lying electronic excitations are modeled using an extended multiplet-based mean-field calculation to identify the roles of lattice and magnetic degrees of freedom in modifying the resonant inelastic x-ray scattering (RIXS) spectral line shape. We have demonstrated that the temperature dependence of RIXS features upon the antiferromagnetic ordering transition enables us to probe the energetics of short-range spin correlations in this material.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.96.184420