Abstract
The interaction of Au atoms with point defects in a vanadyl-terminated V2O3(0001) film has been investigated with low-temperature scanning tunneling microscopy (STM). For this purpose, oxygen and vanadyl vacancies were introduced into the oxide surface via electron bombardment and characterized with STM topographic imaging and conductance spectroscopy. In addition, water titration experiments have been performed to distinguish the different types of point defects. Oxide films with increasing defect densities have then been prepared to explore the interaction of individual Au atoms with the surface. Up to the highest defect concentration, regular bridge sites in the vanadyl lattice were identified to be the preferred Au adsorption sites. This is in conflict with recent DFT calculations that found Au binding to oxygen vacancies to be much stronger than to regular surface sites. Possible reasons for the discrepancy are discussed in the text.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
