Saturation and self-absorption effects in the angle-dependent 2 p3d resonant inelastic X-ray scattering spectra of Co3+

Ru Pan Wang, Hebatalla Elnaggar, Charles J. Titus, Keisuke Tomiyasu, Jaap Geessinck, Gertjan Koster, Federica Frati, Jun Okamoto, Di Jing Huang, Frank M.F. De Groot*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Angle-dependent 2p3d resonant inelastic X-ray scattering spectra of a LaCoO3 single crystal and a 55 nm LaCoO3 film on a SrTiO3 substrate are presented. Theoretical calculation shows that, with ∼20 meV resolved Co 2p3d resonant inelastic X-ray scattering (RIXS), the excited states of the isotropic 1A1g (O h) ground state are split by 3d spin-orbit coupling, which can be distinguished via their angular dependence. However, strong self-absorption and saturation effects distort the spectra of the LaCoO3 single crystal and limit the observation of small angular dependence. In contrast, the RIXS on 55 nm LaCoO3 shows less self-absorption effects and preserves the angular dependence of the excited states.

Original languageEnglish
Pages (from-to)979-987
Number of pages9
JournalJournal of synchrotron radiation
Volume27
DOIs
Publication statusPublished - 1 Jul 2020

Keywords

  • angle-dependent RIXS/RXES
  • saturation and self-absorption effects

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