Site-Specific Characteristic of the Kikuch-Like Bands in High-Angular-Resolution X-Ray Photoelectron Diffraction.

  • Ichinohe Yuji
    Institute of Industrial Science, The University of Tokyo, 7–22–1 Roppongi, Minato–ku, Tokyo 106, Japan
  • Ishii Hideshi
    Institute of Industrial Science, The University of Tokyo, 7–22–1 Roppongi, Minato–ku, Tokyo 106, Japan
  • Owari Masanori
    Environmental Science Center, The University of Tokyo, 7–3–1 Hongo, Bunkyo–ku, Tokyo 113, Japan
  • Nihei Yoshimasa
    Institute of Industrial Science, The University of Tokyo, 7–22–1 Roppongi, Minato–ku, Tokyo 106, Japan

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Fine-mesh two-dimensional measurements of Ca2p and F1s X-ray photoelectron diffraction (XPED) patterns from a CaF2(111) surface were performed with high angular resolution. These measurements revealed a great deal of fine structure including many Kikuchi-like bands and circular patterns. On comparing the Ca2p and F1s XPED patterns, an energy dependence of the Kikuchi-like bands and circular patterns was observed. Furthermore, the Kikuchi-like bands associated with the (111) plane differed substantially between the Ca2p and F1s XPED patterns. This is the first report of the site-specific characteristic of the Kikuchi-like bands in XPED.

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