Abstract
Photoemission spectroscopy with synchrotron radiation has been used to study the valence-band behavior as well as the Au 4f core-level binding energy shifts of coadsorbed Au and Ag overlayers on Ru(001) at one-monolayer coverage each as monitored with thermal desorption measurements. The results were compared with bulk Au–Ag results obtained previously to determine if and under what conditions a two-dimensional alloy is formed. We found that alloying occurred to some extent at room temperature and a stable alloy was formed at elevated temperatures (800 K) when Ag was deposited first, while there was no alloying when Au was deposited first on the Ru substrate. It appears that there is a significant difference in the electronic structure of the overlayers depending on the order of the deposition. These results and their implications are discussed.
Sign-in/Register to access full text options 
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 callMore From: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films
Disclaimer: 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.
