Abstract
Submonolayers to multilayers of zinc and oxygen deposited in UHV on Cu(110) were characterized by Auger electron spectroscopy (AES), low energy electron diffraction (LEED), and temperature programmed desorption (TPD) of CO, CO2 and zinc. Carbon monoxide adsorbs will on copper at 150 K but only poorly on the oxides of copper and zinc. Carbon dioxide adsorbs on zinc oxide at 150 K but not on copper or oxidized copper. We used a combination of CO and CO2 adsorption to follow the initial growth of two-dimensional ZnOx islands and the effect of heat and oxygen treatments on these two-dimensional islands. It is shown that heating above 300 K leads irreversibly to three-dimensional islands formation.
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