Abstract
The adsorption of water molecules on a stoichiometricCeO2(111) surface at room temperature is studied with dynamic scanning force microscopy. Atomicresolution imaging reveals spontaneous adsorption as well as deposition of molecules by thetip of the force microscope. Water molecules localize exclusively on one type ofsite that is associated with the cerium ion sub-lattice and stick to the surfacewith an estimated surface diffusion barrier of 1 eV. Occasionally adsorbates aremoved laterally across the cerium sub-lattice by the action of the scanning tip.
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