Electronic properties of FeSe 1xTe x probed by x-ray emission and absorption spectroscopy

L. Simonelli, N. L. Saini, Y. Mizuguchi, Y. Takano, T. Mizokawa, G. Baldi, G. Monaco

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Abstract

The electronic structure of FeSe 1xTe x chalcogenide superconductors has been studied by x-ray emission (XES) and x-ray absorption (XAS) as a function of Te substitution. The Fe Kβ XES spectra reveal a relatively low spin state for Fe in FeSe 1xTe x superconductors, persisting in the whole range of Te substitution. The Fe K-edge high-resolution XAS shows systematic spectral changes due to the evolving hybridization between the Fe 3d (4p) and chalcogen p (d) orbitals. The resonant inelastic x-ray scattering (RIXS) spectra hardly show any feature except the one due to charge transfer from occupied to unoccupied bands, that changes substantially from FeSe to FeTe. The results provide important information on the electronic states and their evolution in the FeSe 1xTe x chalcogenides.

Original languageEnglish
Article number415501
JournalJournal of Physics Condensed Matter
Volume24
Issue number41
DOIs
Publication statusPublished - 2012 Oct 17

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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