Scanning tunneling microscopy of Sr adsorption on the Si(100)-2×1 surface

R. Z. Bakhtizin, J. Kishimoto, T. Hashizume, T. Sakurai

    研究成果: Article査読

    33 被引用数 (Scopus)

    抄録

    The Sr-induced ordered superstructures on the Si(100)-2×1 surface have been studied using ultrahigh vacuum scanning tunneling microscopy and low-energy electron diffraction (LEED) for metal coverages (θ) below one monolayer (ML). At very low coverages (θ≤0.01 ML) Sr atoms adsorb as isolated atoms or small clusters. At submonolayer coverages of ∼θ≥0.12 ML we have observed the alkali-earth metal chains, even at room temperature, that run perpendicular to the substrate dimer rows. It is found that the Sr rows form areas of (2×3) order for coverages θ about 1/3 ML after annealing at 800 °C whereas a (1×3) phase grows on top of this with θ≥1.0 ML coverage in agreement with LEED data. It was also observed that the (2×3) phase formation is critical to the Sr coverage and to the annealing temperature as well. The relationship between the (2×3) and (1×3) ordered structures has been investigated as a function of Sr coverage and annealing temperature.

    本文言語English
    ページ(範囲)1000-1004
    ページ数5
    ジャーナルJournal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
    14
    2
    出版ステータスPublished - 1996 3 1

    ASJC Scopus subject areas

    • 凝縮系物理学
    • 電子工学および電気工学

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