Abstract
Ne and Ar field ion (FI) imaging conditions for clean and epitaxially gold-covered Rh(111) tips have been studied. A significant decrease of the image voltages has been observed for various thicknesses of the Au films. This is caused by different enhancements of local fields in the vicinity of protruding Au atoms compared to Rh due to their different electronic structure. The results are in accord with the theoretical trend recently predicted in the self-consistent calculations of local-field distribution in the vicinity of protruding surface atoms of different chemical nature. The assumption of an exchange type collision-induced field ionization mechanism is in agreement with presented data.
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.
