In situ photoemission study of La1-xSrxFeO 3 epitaxial thin films

H. Wadati*, D. Kobayashi, A. Chikamatsu, R. Hashimoto, M. Takizawa, K. Horiba, H. Kumigashira, T. Mizokawa, A. Fujimori, M. Oshima, M. Lippmaa, M. Kawasaki, H. Koinuma

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We have performed in situ photoemission and O 1s X-ray absorption studies of La1-xSrxFeO3 (0≤x≤0.67) epitaxial thin films grown by laser molecular beam epitaxy. We found that hole doping induces spectral weight transfer from below the Fermi level to above it across the gap in a highly non-rigid-band-like manner. We also observed the temperature dependence on the spectra of the x=0.67 sample, which shows a charge disproportionation at 190 K. With decreasing temperature, we observed gradual changes of the spectra with spectral weight transfer primarily within the e g band.

Original languageEnglish
Pages (from-to)877-880
Number of pages4
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume144-147
DOIs
Publication statusPublished - 2005 Jun
Externally publishedYes

Keywords

  • LaSrFeO
  • Laser MBE
  • Photoemission spectroscopy
  • Thin films

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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