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

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arxiv 1002.2777 v1 pith:3XKK7HRG submitted 2010-02-14 cond-mat.str-el cond-mat.mtrl-sci

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
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Satoshi Iguchi Yoshinori Tokura Atsushi Higashiya Makina Yabashi Kenji Tamasaku Tetsuya Ishikawa Takahiro Ito Shin-ichi Kimura Shigemasa Suga
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classification cond-mat.str-el cond-mat.mtrl-sci
keywords temperatureenergyextremelyfe3o4hardphotoelectronx-rayabove
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Hard X-ray and extremely low energy bulk-sensitive photoelectron spectroscopy has been performed in the temperature range of 100-330 K for Fe3O4. In the high temperature phase just above the Verwey transition, the intensity at the Fermi level (EF) is still negligible, 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 model, which takes the polaron effect into account.

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