Abstract
The surface structures formed by the adsorption of Li on Al(1 1 0) at room temperature have been studied by low energy electron diffraction (LEED) and core-level photoemission spectroscopy (CLS). The Al(1 1 0)–c(2×2)-Li structure formed by adsorption of one-half monolayer (ML) Li is shown by analysis of extensive LEED measurements to be an ordered surface alloy. The structure contains Li atoms in two-fold substitutional sites formed by the displacement of 0.5 ML Al atoms from the first layer of the substrate. This reconstructive adsorption leads to strong perturbations of the substrate extending five layers into the solid. CLS measurements provide insight to the adsorption geometry at coverages below and above 0.5 ML Li. In particular, it is found that adsorption of Li at coverages above 0.5 ML leads to the formation of a partially disordered, multilayer surface alloy.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
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.