Scanning Tunneling Microscope Study of the Structural Transformation of the Si(111)7×7 Surface to the Na-Induced 3×1 Surface

Dong Ryul Jeon, Tomihiro Hashizume, Xiangdong Wang, Chunli Bai, Kumi Motai, Toshio Sakurai

    Research output: Contribution to journalArticle

    18 Citations (Scopus)

    Abstract

    The structure of the Na-induced Si(111) 3×1 surface has been studied using a field-ion-scanning-tunneling-microscope. The STM images showed that the entire Si surface was uniformly covered with a single layer of atomically resolved Na 3×1 structure. Upon annealing, the Na layer peeled off gradually, revealing the underlying Si substrate, which exhibited various intermediate reconstructions such as 2×2, 5×5, and 9×9 before the 7×7 structure was restored at 800°C. Our observations suggest that the top layer of the Si substrate converts to the bulk terminated 1×1 structure upon Na deposition and annealing.

    Original languageEnglish
    Pages (from-to)L501-L504
    JournalJapanese journal of applied physics
    Volume31
    Issue number4
    DOIs
    Publication statusPublished - 1992 Apr

    Keywords

    • Alkali metal
    • Epitaxial growth
    • Na adsorption
    • Stm, Si(111)

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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