Adsorption geometry of Na saturation on the dimerized Si(100)(2 X 1) surface

T. Hashizume, K. Motai, H. Lu, T. Sakurai

    研究成果: Article査読

    2 被引用数 (Scopus)

    抄録

    Na adsorption on the Si(100)(2 X 1) surface at the saturation coverage was investigated using field-ion scanning tunneling microscopy/spectroscopy (FI-STM/STS). The Na saturated surface has a (2 X 1) dimerized structure, similar to that of the clean (2 X 1) surface. In the STM image, each dimer is imaged to be bifurcated in the filled states. The STS measurement showed a large energy gap of approximately 1 eV, suggesting that the Na/Si(100)-(2 X 1) surface has the semiconductor-like electronic states of the surface. These observations are consistent with the double-layer model proposed by Kono's group and a recent theoretical study by Terakura's group.

    本文言語English
    ページ(範囲)261-265
    ページ数5
    ジャーナルApplied Surface Science
    67
    1-4
    DOI
    出版ステータスPublished - 1993 4 2

    ASJC Scopus subject areas

    • 化学 (全般)
    • 凝縮系物理学
    • 物理学および天文学(全般)
    • 表面および界面
    • 表面、皮膜および薄膜

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