Structural transformation of the Si(111) (7 X 7)-to-(3 X 1) surface structure induced by sodium

D. Jeon, T. Hashizume, X. Wang, K. Motai, T. Sakurai

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    A field ion-scanning tunneling microscope has been used to study the structure of the Na-induced Si(111)(3 X 1) surface. The STM images showed that the entire Si surface was uniformly covered with a single layer of the Na(3 X 1) structure. Upon further Na deposition onto this surface a well ordered Na multilayer was formed via Stranski-Krastanov growth mode. Tunneling spectroscopy performed on the surfaces at various Na coverages revealed that the first Na layer was insulating, but the insulator-metal transition of the Na overlayer occured in the second layer.

    Original languageEnglish
    Pages (from-to)257-260
    Number of pages4
    JournalApplied Surface Science
    Volume67
    Issue number1-4
    DOIs
    Publication statusPublished - 1993 Apr 2

    ASJC Scopus subject areas

    • Chemistry(all)
    • Condensed Matter Physics
    • Physics and Astronomy(all)
    • Surfaces and Interfaces
    • Surfaces, Coatings and Films

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