Surface structure of AU3Cu(001)

G.A. Eckstein, S. Maupai, A.S. Dakkouri, M. Stratmann, Mourits Nielsen, Martin Meedom Nielsen, Robert Krarup Feidenhans'l, J.H. Zeysing, O. Bunk, R.L. Johnson

Research output: Contribution to journalJournal articleResearchpeer-review


The surface morphology, composition, and structure of Au3Cu(001) as determined by scanning tunneling microscopy and surface x-ray diffraction are presented. Atomic resolution STM images reveal distinctive geometric features. The analysis of the surface x-ray diffraction data provides clear evidence of gold enrichment of the topmost layer with two different gold positions and only a small copper fraction. The second layer has approximately Cu4Au stoichiometry, whereas the third layer is pure gold. STM images and SXRD results are in excellent agreement and reveal a detailed atomic model for the surface structure. [S0163-1829(99)04535-X].
Original languageEnglish
JournalPhysical Review B
Issue number11
Pages (from-to)8321-8325
Publication statusPublished - 1999


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