TY - JOUR
T1 - Electronic structure of FeSi1-x Gex and FeGa3 investigated by soft x-ray photoelectron spectroscopy complementary to x-ray emission spectroscopy
AU - Yamaoka, H.
AU - Matsunami, M.
AU - Eguchi, R.
AU - Ishida, Y.
AU - Tsujii, N.
AU - Takahashi, Y.
AU - Senba, Y.
AU - Ohashi, H.
AU - Shin, S.
PY - 2008/7/30
Y1 - 2008/7/30
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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U2 - 10.1103/PhysRevB.78.045125
DO - 10.1103/PhysRevB.78.045125
M3 - Article
AN - SCOPUS:49149109449
SN - 0163-1829
VL - 78
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 4
M1 - 045125
ER -