Direct methods determination of the Si(111)-(6x6)Au surface structure

D. Grozea, E. Landree, L.D. Marks, R. Feidenhans'l, M. Nielsen, R.L. Johnson

    Research output: Contribution to journalJournal articleResearch

    Abstract

    The atomic structure of the Au 6 x 6 on Si(111) phase has been determined using direct methods and surface X-ray diffraction data. This surface structure is very complicated, with 14 independent gold atoms, relaxations in 24 independent silicon sites and three partially occupied gold sites. In one sense the structure can be described as microdomains of the parent root 3 x root 3 An on Si(111) structure. A better description is in terms of a tilling of incomplete pentagonal and trimer units, essentially a pseudo-pentagonal glass. In terms of these structural units it is possible to explain all the gold structures in the coverage range 0.8-1.5 monolayers as pseudo-glasses with strong short-range order but varying degrees of long-range order. (C) 1998 Elsevier Science B.V. All rights reserved.
    Original languageEnglish
    JournalSurface Science
    Volume418
    Issue number1
    Pages (from-to)32-45
    ISSN0039-6028
    DOIs
    Publication statusPublished - 1998

    Fingerprint Dive into the research topics of 'Direct methods determination of the Si(111)-(6x6)Au surface structure'. Together they form a unique fingerprint.

    Cite this