Surface Geometric Structures of Cu Deposited upon α-Al2O3 (0001)
Q. Guo, P.J. Møller
Laboratory of Physical Chemistry, H.C. Ørsted Institute, University of Copenhagen, 2100 Copenhagen, Denmark

and L. Gui
Institute of Physical Chemistry, Peking University, Beijing, P.R. China
Received: February 19, 1992; revised version: May 4, 1992
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Upon deposition of Cu on a 1 × 1 α-Al2O3 (0001) surface at room temperature the surface structure was found to change with increasing amounts of Cu deposited, from two-dimensional monolayer islands through three-dimensional nuclei until reaching a thin film. Subsequent surface heat-treatment to 650°C produced a stable Cu(111)-R30° superstructure as observed by LEED.
DOI: 10.12693/APhysPolA.81.647
PACS numbers: 68.65.+g, 68.55.Bd