Photoemission and Hartree-Fock studies of oxygen-hole ordering in charge-disproportionated La1-xSrxFeO3

J. Matsuno, Takashi Mizokawa, A. Fujimori, K. Mamiya, Y. Takeda, S. Kawasaki, M. Takano

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

We have studied the "charge disproportionation" phenomenon in La1-xSrxFeO3 by photoemission spectroscopy and unrestricted Hartree-Fock band-structure calculations. We find a systematic decrease of the spectral intensity near Fermi level (EF) toward x=0.67, where the charge disproportion is most stabilized. The spectra for x=0.67 show the clearest temperature-dependent changes in the vicinity of EF across the transition corresponding to the charge ordering of "Fe3+":"Fe5+" = 2:1. The Hartree-Fock calculations indicate that ordering of oxygen holes indeed occurs in the charge disproportionated state.

Original languageEnglish
Pages (from-to)4605-4608
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume60
Issue number7
Publication statusPublished - 1999
Externally publishedYes

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Photoemission
photoelectric emission
Oxygen
oxygen
Photoelectron spectroscopy
Fermi level
Band structure
spectroscopy
Temperature
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Photoemission and Hartree-Fock studies of oxygen-hole ordering in charge-disproportionated La1-xSrxFeO3. / Matsuno, J.; Mizokawa, Takashi; Fujimori, A.; Mamiya, K.; Takeda, Y.; Kawasaki, S.; Takano, M.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 60, No. 7, 1999, p. 4605-4608.

Research output: Contribution to journalArticle

Matsuno, J. ; Mizokawa, Takashi ; Fujimori, A. ; Mamiya, K. ; Takeda, Y. ; Kawasaki, S. ; Takano, M. / Photoemission and Hartree-Fock studies of oxygen-hole ordering in charge-disproportionated La1-xSrxFeO3. In: Physical Review B - Condensed Matter and Materials Physics. 1999 ; Vol. 60, No. 7. pp. 4605-4608.
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AU - Takeda, Y.

AU - Kawasaki, S.

AU - Takano, M.

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