Bulk electronic properties of Fe Si1-x Gex investigated by high-resolution x-ray spectroscopies

H. Yamaoka, N. Tsujii, H. Oohashi, D. Nomoto, I. Jarrige, K. Takahiro, K. Ozaki, K. Kawatsura, Y. Takahashi

研究成果: Article査読

17 被引用数 (Scopus)

抄録

We report an investigation of the bulk electronic properties of Fe in Fe Si1-x Gex (x=0, 0.11, 0.19, and 0.44) measured by high-resolution x-ray absorption spectroscopy at the Fe K edge, Fe Kβ x-ray emission, and 1s3p resonant x-ray emission spectroscopies. The emission data clearly show an increase in the magnetic moment when x increases from 0 to 0.44. This doping-induced spin transition is accompanied by the onset of the magnetic order at x≥0.2. The 1s3p resonant x-ray emission data reveal that the Fe 3d states exhibit a delocalized character, while no intermediate valence admixture takes place. This is at odd with the intermediate valence Kondo insulator model and rather supports the local density approximation band theory.

本文言語English
論文番号115201
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
77
11
DOI
出版ステータスPublished - 2008 3月 5
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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