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High resolution resonant inelastic EUV scattering from orbital excitations in a Heisenberg antiferromagnet

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arxiv 1710.03009 v1 pith:JAOY6APN submitted 2017-10-09 cond-mat.mtrl-sci cond-mat.str-el

Antonio Caretta , Martina Dell'Angela , Yi-De Chuang , Alexandra M. Kalashnikova , Roman V. Pisarev , Davide Bossini , Florian Hieke , Wilfried Wurth
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Barbara Casarin Roberta Ciprian Fulvio Parmigiani Surge Wexler L. Andrew Wray Marco Malvestuto
This is my paper · ORCID
classification cond-mat.mtrl-scicond-mat.str-el
keywords excitationsantiferromagnetenergyheisenberghighinelasticresolutionresonant
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We report the high resolution resonant inelastic EUV scattering study of quantum Heisenberg antiferromagnet KCoF3. By tuning the EUV photon energy to 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 RIXS spectral lineshape. 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.

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