Photoemission study of the electronic structure of LaFeAsO 1-xFx and LaFePO1-xFx

Walid Malaeb; Teppei Yoshida; Takashi Kataoka; Atsushi Fujimori; Masato Kubota; Kanta Ono; Hidetomo Usui; Kazuhiko Kuroki; Ryotaro Arita; Hideo Aoki; Yoichi Kamihara; Masahiro Hirano; Hideo Hosono

doi:10.1143/JPSJS.77SC.69

Photoemission study of the electronic structure of LaFeAsO _1-xF_x and LaFePO_1-xF_x

Walid Malaeb, Teppei Yoshida, Takashi Kataoka, Atsushi Fujimori, Masato Kubota, Kanta Ono, Hidetomo Usui, Kazuhiko Kuroki, Ryotaro Arita, Hideo Aoki, Yoichi Kamihara, Masahiro Hirano, Hideo Hosono

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

We have performed a photoemission spectroscopy study of the newly discovered iron-based superconductors LaFeAsO_1-xF_x and LaFePO_1-xF_x. The valence-band spectra show a narrow Fe 3d-derived band near E_F indicating the itinerant character of the Fe 3d states. In going from the undoped to F-doped compounds, all the spectra are found to shift to higher binding energies, consistent with electron doping within the rigid-band model. Also, in going from LaFeAsO_1-xF _x to LaFePO_1-xF_x, the near-E_F intensity increases reflecting the weakening of electron correlation.

Original language	English
Pages (from-to)	69-71
Number of pages	3
Journal	Journal of the Physical Society of Japan
Volume	77
Issue number	SUPPL. C
DOIs	https://doi.org/10.1143/JPSJS.77SC.69
Publication status	Published - 2008 Jan 1
Externally published	Yes

Keywords

Electronic structure
LaFeAsO
Photoemission spectroscopy

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJS.77SC.69

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Malaeb, W., Yoshida, T., Kataoka, T., Fujimori, A., Kubota, M., Ono, K., Usui, H., Kuroki, K., Arita, R., Aoki, H., Kamihara, Y., Hirano, M., & Hosono, H. (2008). Photoemission study of the electronic structure of LaFeAsO _1-xF_x and LaFePO_1-xF_x. Journal of the Physical Society of Japan, 77(SUPPL. C), 69-71. https://doi.org/10.1143/JPSJS.77SC.69

Photoemission study of the electronic structure of LaFeAsO _1-xF_x and LaFePO_1-xF_x. / Malaeb, Walid; Yoshida, Teppei; Kataoka, Takashi; Fujimori, Atsushi; Kubota, Masato; Ono, Kanta; Usui, Hidetomo; Kuroki, Kazuhiko; Arita, Ryotaro; Aoki, Hideo; Kamihara, Yoichi; Hirano, Masahiro; Hosono, Hideo.

In: Journal of the Physical Society of Japan, Vol. 77, No. SUPPL. C, 01.01.2008, p. 69-71.

Research output: Contribution to journal › Article

Malaeb, Walid ; Yoshida, Teppei ; Kataoka, Takashi ; Fujimori, Atsushi ; Kubota, Masato ; Ono, Kanta ; Usui, Hidetomo ; Kuroki, Kazuhiko ; Arita, Ryotaro ; Aoki, Hideo ; Kamihara, Yoichi ; Hirano, Masahiro ; Hosono, Hideo. / Photoemission study of the electronic structure of LaFeAsO _1-xF_x and LaFePO_1-xF_x. In: Journal of the Physical Society of Japan. 2008 ; Vol. 77, No. SUPPL. C. pp. 69-71.

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abstract = "We have performed a photoemission spectroscopy study of the newly discovered iron-based superconductors LaFeAsO1-xFx and LaFePO1-xFx. The valence-band spectra show a narrow Fe 3d-derived band near EF indicating the itinerant character of the Fe 3d states. In going from the undoped to F-doped compounds, all the spectra are found to shift to higher binding energies, consistent with electron doping within the rigid-band model. Also, in going from LaFeAsO1-xF x to LaFePO1-xFx, the near-EF intensity increases reflecting the weakening of electron correlation.",

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AU - Kataoka, Takashi

AU - Fujimori, Atsushi

AU - Kubota, Masato

AU - Ono, Kanta

AU - Usui, Hidetomo

AU - Kuroki, Kazuhiko

AU - Arita, Ryotaro

AU - Aoki, Hideo

AU - Kamihara, Yoichi

AU - Hirano, Masahiro

AU - Hosono, Hideo

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AB - We have performed a photoemission spectroscopy study of the newly discovered iron-based superconductors LaFeAsO1-xFx and LaFePO1-xFx. The valence-band spectra show a narrow Fe 3d-derived band near EF indicating the itinerant character of the Fe 3d states. In going from the undoped to F-doped compounds, all the spectra are found to shift to higher binding energies, consistent with electron doping within the rigid-band model. Also, in going from LaFeAsO1-xF x to LaFePO1-xFx, the near-EF intensity increases reflecting the weakening of electron correlation.

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