Abstract
The early stages of the formation of Au films on chemically modified Mo(110) surfaces were studied by Auger electron spectroscopy (AES), low energy electron diffraction (LEED), thermal desorption spectroscopy (TDS) and work function change (Δφ) measurements. The surfaces were modified by saturation with oxygen and CO and by carburization. Carburization did not suppress initial two-dimensional (2D) growth but on the oxygen-saturated surface Au grew from the very beginning in small 3D crystals with oscillatory thickness dependence of the Auger signals. CO showed an intermediate behaviour. It is concluded that the bond strength and the location of the chemical modifier normal to the surface is decisive for the growth mode.
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