Electronic and crystallographic structures of 2D silver adlayers on Ge(111)

G. Lelay, R.L. Johnson, R. Seemann, F. Grey, R. Feidenhans'l, M. Nielsen

    Research output: Contribution to journalJournal articleResearch


    We have studied the formation of the Ag/Ge(111) interface with synchroton radiation photoelectron spectroscopy. We compare the valence band states and the core-level spectra for room temperature adsorption and for different superstructures. Special attention is paid to the square-root 3 x square-root 3 structure since its STM images are identical to those of Ag/Si(111), while a structural analysis by surface X-ray diffraction leads, instead, to a geometry similar to that of Au/Si(111). Our photoemission results support the (rotated) trimer model proposed by the X-ray data.
    Original languageEnglish
    JournalSurface Science
    Pages (from-to)539-544
    Publication statusPublished - 1993


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