An ordered mixed structure formed by restructuring type coadsorption of Na and K on Ag(001)

Seigi Mizuno, Masao Imaki, Hiroshi Tochihara

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    Coadsorption of Na and K on Ag(001) at room temperature has been studied by low energy electron diffraction (LEED). A 3 x 3 LEED pattern was observed irrespective of the order of adsorption. For this formation, it is necessary to deposit Na and K atoms with appropriate coverage. We have determined the 3 x 3 structure by a tensor LEED analysis. It is a restructured surface and is very similar to the previously determined 3 x 3 structure formed on Ag(001) by pure Na adsorption. In the coadsorption, Na and K atoms occupy preferable sites selectively, and construct an ordered mixed structure on Ag(001). That is, small Na atoms are located in the missing row sites, while large K atoms sit on the hollow sites of four-Ag-atom islands. The reason for the site selectivity of Na and K atoms in the mixed 3 x 3 structures is discussed.

    Original languageEnglish
    Pages (from-to)653-659
    Number of pages7
    JournalSurface Review and Letters
    Volume8
    Issue number6
    DOIs
    Publication statusPublished - 2001

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Surfaces and Interfaces
    • Surfaces, Coatings and Films
    • Materials Chemistry

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