Different routes to charge disproportionation in perovskite-type Fe oxides

J. Matsuno*, T. Mizokawa, A. Fujimori, Y. Takeda, S. Kawasaki, M. Takano

*この研究の対応する著者

研究成果査読

1 被引用数 (Scopus)

抄録

Iron perovskites (formula presented) and (formula presented) show charge disproportionation, resulting in charge-ordered states with (formula presented) and (formula presented) respectively. We have made photoemission and unrestricted Hartree-Fock band-structure calculations of (formula presented) and compared it with (formula presented) With decreasing temperature, a gradual decrease of the spectral weight near the Fermi level occurred in (formula presented) as in (formula presented) although lattice distortion occurs only in (formula presented) Hartree-Fock calculations have indicated that both the breathing and tilting distortions are necessary to induce the charge disproportionation in (formula presented) while no lattice distortion is necessary for the charge disproportionation in (formula presented).

本文言語English
ページ(範囲)1-4
ページ数4
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
66
19
DOI
出版ステータスPublished - 2002
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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