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 › peer-review

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
Externally published	Yes

Keywords

Electronic structure
LaFeAsO
Photoemission spectroscopy

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJS.77SC.69

Cite this

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title = "Photoemission study of the electronic structure of LaFeAsO 1-xFx and LaFePO1-xFx",

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.",

keywords = "Electronic structure, LaFeAsO, Photoemission spectroscopy",

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

year = "2008",

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language = "English",

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pages = "69--71",

journal = "Journal of the Physical Society of Japan",

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publisher = "Physical Society of Japan",

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TY - JOUR

T1 - Photoemission study of the electronic structure of LaFeAsO 1-xFx and LaFePO1-xFx

AU - Malaeb, Walid

AU - Yoshida, Teppei

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

PY - 2008

Y1 - 2008

N2 - 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.

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.

KW - Electronic structure

KW - LaFeAsO

KW - Photoemission spectroscopy

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