Photoemission study of the electronic structure of LaFeAsO 1-xFx and LaFePO1-xFx

Walid Malaeb, Teppei Yoshida, Takashi Kataoka, Atsushi Fujimori, Masato Kubota, Kanta Ono, Hidetomo Usui, Kazuhiko Kuroki, Ryotaro Arita, Hideo Aoki, Yoichi Kamihara, Masahiro Hirano, Hideo Hosono

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3 Citations (Scopus)

Abstract

We have performed a photoemission spectroscopy study of the newly discovered iron-based superconductors LaFeAsO1-xFx and LaFePO1-xFx. The valence-band spectra show a narrow Fe 3d-derived band near EF indicating the itinerant character of the Fe 3d states. In going from the undoped to F-doped compounds, all the spectra are found to shift to higher binding energies, consistent with electron doping within the rigid-band model. Also, in going from LaFeAsO1-xF x to LaFePO1-xFx, the near-EF intensity increases reflecting the weakening of electron correlation.

Original languageEnglish
Pages (from-to)69-71
Number of pages3
JournalJournal of the Physical Society of Japan
Volume77
Issue numberSUPPL. C
DOIs
Publication statusPublished - 2008 Jan 1
Externally publishedYes

Keywords

  • Electronic structure
  • LaFeAsO
  • Photoemission spectroscopy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Malaeb, W., Yoshida, T., Kataoka, T., Fujimori, A., Kubota, M., Ono, K., Usui, H., Kuroki, K., Arita, R., Aoki, H., Kamihara, Y., Hirano, M., & Hosono, H. (2008). Photoemission study of the electronic structure of LaFeAsO 1-xFx and LaFePO1-xFx. Journal of the Physical Society of Japan, 77(SUPPL. C), 69-71. https://doi.org/10.1143/JPSJS.77SC.69