Electronic structure of FeSi1-x Gex and FeGa3 investigated by soft x-ray photoelectron spectroscopy complementary to x-ray emission spectroscopy

H. Yamaoka, M. Matsunami, Ritsuko Eguchi, Y. Ishida, N. Tsujii, Y. Takahashi, Y. Senba, H. Ohashi, S. Shin

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Soft x-ray photoelectron spectroscopy for FeSi1-x Gex (x=0, 0.11, 0.19, 0.26, and 0.44) and FeGa3 was performed at FeL absorption edge complementary to the x-ray emission spectroscopy. The absorption and valence-band spectra show the phase transition of the electronic state between x=0.26 and 0.44 in FeSi1-x Gex accompanying the narrowing of the density of state near the Fermi edge. High-resolution x-ray absorption spectra (total electron yields) at Fe2 p3/2 absorption edge resolve the fine structure, originated from the valence and Auger component of electrons. Resonant valence-band and constant initial-state spectra show Fano-type profile at Fe2 p3/2 absorption edge only for the x=0.44 sample but not for the x=0 sample and FeGa3. The crossover point, where the Raman and Auger features mix, is near the Fe2p absorption edge for both of the x=0 and 0.44 samples, showing the delocalized 3d states.

Original languageEnglish
Article number045125
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number4
DOIs
Publication statusPublished - Jul 30 2008
Externally publishedYes

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Emission spectroscopy
Photoelectron spectroscopy
x ray spectroscopy
Electronic structure
photoelectron spectroscopy
electronic structure
Valence bands
X rays
Absorption spectra
spectroscopy
valence
x rays
Electrons
Electronic states
Phase transitions
x ray spectra
x ray absorption
crossovers
electrons
fine structure

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Electronic structure of FeSi1-x Gex and FeGa3 investigated by soft x-ray photoelectron spectroscopy complementary to x-ray emission spectroscopy. / Yamaoka, H.; Matsunami, M.; Eguchi, Ritsuko; Ishida, Y.; Tsujii, N.; Takahashi, Y.; Senba, Y.; Ohashi, H.; Shin, S.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 78, No. 4, 045125, 30.07.2008.

Research output: Contribution to journalArticle

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AU - Yamaoka, H.

AU - Matsunami, M.

AU - Eguchi, Ritsuko

AU - Ishida, Y.

AU - Tsujii, N.

AU - Takahashi, Y.

AU - Senba, Y.

AU - Ohashi, H.

AU - Shin, S.

PY - 2008/7/30

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N2 - Soft x-ray photoelectron spectroscopy for FeSi1-x Gex (x=0, 0.11, 0.19, 0.26, and 0.44) and FeGa3 was performed at FeL absorption edge complementary to the x-ray emission spectroscopy. The absorption and valence-band spectra show the phase transition of the electronic state between x=0.26 and 0.44 in FeSi1-x Gex accompanying the narrowing of the density of state near the Fermi edge. High-resolution x-ray absorption spectra (total electron yields) at Fe2 p3/2 absorption edge resolve the fine structure, originated from the valence and Auger component of electrons. Resonant valence-band and constant initial-state spectra show Fano-type profile at Fe2 p3/2 absorption edge only for the x=0.44 sample but not for the x=0 sample and FeGa3. The crossover point, where the Raman and Auger features mix, is near the Fe2p absorption edge for both of the x=0 and 0.44 samples, showing the delocalized 3d states.

AB - Soft x-ray photoelectron spectroscopy for FeSi1-x Gex (x=0, 0.11, 0.19, 0.26, and 0.44) and FeGa3 was performed at FeL absorption edge complementary to the x-ray emission spectroscopy. The absorption and valence-band spectra show the phase transition of the electronic state between x=0.26 and 0.44 in FeSi1-x Gex accompanying the narrowing of the density of state near the Fermi edge. High-resolution x-ray absorption spectra (total electron yields) at Fe2 p3/2 absorption edge resolve the fine structure, originated from the valence and Auger component of electrons. Resonant valence-band and constant initial-state spectra show Fano-type profile at Fe2 p3/2 absorption edge only for the x=0.44 sample but not for the x=0 sample and FeGa3. The crossover point, where the Raman and Auger features mix, is near the Fe2p absorption edge for both of the x=0 and 0.44 samples, showing the delocalized 3d states.

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