Temperature- and coverage-dependent evolution of the Au/Pd(110) surface structure

M. Kralj, A. Bailly, M.-C. Saint-Lager, S. Degen, A. Krupski, C. Becker, P. Dolle, M. De Santis, K. Wandelt

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The morphology and the atomic scale structure of thin gold films (up to 2.5 ML) on Pd(1 1 0) were studied by means of scanning tunneling microscopy and surface X-ray diffraction. At room temperature the films exhibit a multilayer growth mode accompanied by the formation of highly anisotropic islands. Annealing above 500 K significantly increases the smoothness of the gold films, which are in registry with the substrate. Above a critical threshold of two monolayers a (1 × 2) missing-row reconstructed film is found. This reconstructed surface is well ordered after annealing at temperatures above 580 K. The specific gold film morphology is envisaged as a way to relax the strain caused by the mismatch between gold and palladium.
    Original languageEnglish
    Pages (from-to)2614-2622
    JournalSurface Science
    Volume600
    Issue number12
    DOIs
    Publication statusPublished - 15 Jun 2006

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