New bonding configuration on Si(111) and Ge(111) surfaces induced by the adsorption of alkali metals

L. Lottermoser, E. Landemark, D.M. Smilgies, M. Nielsen, R. Falkenberg Feidenhans'l, R.L. Johnson, M. Gierer, A.P. Seitsonen, H. Kleine, H. Bludau, H. Over, S.K. Kim, F. Jona

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The structure of the (3×1) reconstructions of the Si(111) and Ge(111) surfaces induced by adsorption of alkali metals has been determined on the basis of surface x-ray diffraction and low-energy electron diffraction measurements and density functional theory. The (3×1) surface results primarily from the substrate reconstruction and shows a new bonding configuration consisting of consecutive fivefold and sixfold Si (Ge) rings in 〈11̅ 0〉 projection separated by channels containing the alkali metal atoms.

    © 1998 The American Physical Society
    Original languageEnglish
    JournalPhysical Review Letters
    Volume80
    Issue number18
    Pages (from-to)3980-3983
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1998

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