Static lattice distortions and the structure of Au/Si(111)-(5x1): An x-ray-diffraction study

C. Schamper, W. Moritz, H. Schulz, R. Feidenhans'l, M. Nielsen, F. Grey, R.L. Johnson

    Research output: Contribution to journalJournal articleResearch

    Abstract

    Grazing-incidence x-ray diffraction has been used to determine the atomic arrangement in the 5 x 1 structure of Au on Si(111). The main features of this structure are partially occupied rows of gold atoms in low-symmetry sites. The density of Au atoms is highly asymmetric in the direction perpendicular to the rows. The substrate atoms in the top double layer are shifted up to 1 angstrom from their bulk position. The structure has a disordered 5 x 2 periodicity due to the variation of the interatomic Au-Au distances within a row in the [011BAR] direction. The model is consistent with recent scanning-tunneling-microscopy topographs.
    Original languageEnglish
    JournalPhysical Review B Condensed Matter
    Volume43
    Issue number14
    Pages (from-to)12130-12133
    ISSN0163-1829
    DOIs
    Publication statusPublished - 1991

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