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

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

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)


    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.

    Original languageEnglish
    Pages (from-to)261-265
    Number of pages5
    JournalApplied Surface Science
    Issue number1-4
    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


    Dive into the research topics of 'Adsorption geometry of Na saturation on the dimerized Si(100)(2 X 1) surface'. Together they form a unique fingerprint.

    Cite this