Polaronic behavior of photoelectron spectra of Fe3O4 revealed by both hard X-ray and extremely low energy photons

Masato Kimura, Hidenori Fujiwara, Akira Sekiyama, Junichi Yamaguchi, Kazumasa Kishimoto, Hiroshi Sugiyama, Gen Funabashi, Shin Imada, Satoshi Iguchi, Yoshinori Tokura, Atsushi Higashiya, Makina Yabashi, Kenji Tamasaku, Tetsuya Ishikawa, Takahiro Ito, Shin Ichi Kimura, Shigemasa Suga

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Hard X-ray and extremely low energy bulk-sensitive photoelectron spectroscopy has been performed in the temperature range of 100-330K for Fe 3O4. In the high temperature phase just above the Verwey transition, the intensity at the Fermi level (EF) is still very weak, but it increases gradually with further increasing the temperature (250 K, 330 K) in consistence with the temperature dependence of the conductivity. The spectral behaviors near EF with temperature are well explained by the polaronic model, which shows the change from small polaron to large polaron.

Original languageEnglish
Article number064710
Journaljournal of the physical society of japan
Volume79
Issue number6
DOIs
Publication statusPublished - 2010 Jun
Externally publishedYes

Keywords

  • Magnetite
  • Photoelectron spectroscopy
  • Polaron
  • Strongly correlated electron system
  • Verwey transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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