Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019) 2020
DOI: 10.7566/jpscp.30.011073
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Electronic Structure of Sr3Fe2−xCoxO7−δ Studied by Photoemission and X-ray Absorption Spectroscopy

Abstract: We have investigated the electronic structure of Sr 3 Fe 2−x Co x O 7−δ using photoemission and soft xray absorption spectroscopy (XAS). From the analysis on the O 1s, Fe 2p, and Co 2p core level photoemission spectra and the line-shape analysis on the Fe and Co L 2,3 edge XAS spectra, we concluded that the valence of Fe and Co are both ∼3.85+, the expected value. From the analysis of 2p−3d resonant photoemission spectra, we found that the electron density of states near the Fermi level has a dominant Fe 3d ch… Show more

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