Electronic structure of FeSe1-xTex studied by Fe L2,3-edge x-ray absorption spectroscopy

N. L. Saini, Y. Wakisaka, B. Joseph, A. Iadecola, S. Dalela, P. Srivastava, E. Magnano, M. Malvestuto, Y. Mizuguchi, Y. Takano, T. Mizokawa, K. B. Garg

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Abstract

Fe L2,3-edge x-ray absorption spectroscopy has been used to study the electronic structure of FeSe1-xTex chalcogenides. The spectra are quite similar to those for the metallic Fe and Fe-based pnictides, consistent with weak correlation effects in the chalcogenides. A systematic change in the experimental spectra with Te substitution is observed and well reproduced by cluster calculations. A combined experimental and theoretical analysis reveals decreased hybridization of Fe 3d and chalcogen p states with increasing Te concentration, which could be important for the superconductivity and magnetism of the chalcogenides.

Original languageEnglish
Article number052502
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number5
DOIs
Publication statusPublished - 2011 Feb 11
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Saini, N. L., Wakisaka, Y., Joseph, B., Iadecola, A., Dalela, S., Srivastava, P., Magnano, E., Malvestuto, M., Mizuguchi, Y., Takano, Y., Mizokawa, T., & Garg, K. B. (2011). Electronic structure of FeSe1-xTex studied by Fe L2,3-edge x-ray absorption spectroscopy. Physical Review B - Condensed Matter and Materials Physics, 83(5), [052502]. https://doi.org/10.1103/PhysRevB.83.052502