Abstract
A √3×√3-(Pb,Sn) surface was studied by means of scanning tunneling microscopy (STM) and core-level photoelectron spectroscopy (PES) to identify its local atomic arrangement. Observed spots in STM were classified into three types, which were white and gray (α), gray and white (β), and black and gray (γ) spots in the filled- and empty-state images, respectively. The STM images also showed a local 3×3-(Pb,Sn) arrangement in the √3×√3-(Pb,Sn) surface. Both Pb 5 d and Sn 4 d core-levels spectra indicated that there were two components on the √3×√3-(Pb,Sn) surface, and the peak positions and shapes of Pb 5 d and Sn 4 d core-levels of the √3×√3-(Pb,Sn) surface were almost the same as those of the √3×√3-Pb and √3×√3-Sn surfaces. Comparison between the heights of the STM spots on the single and binary adsorbate surfaces and their core-levels spectra suggested that Sn and Pb were located at α and β positions, respectively. The nominal coverage of the local 3×3-(Pb,Sn) arrangement was determined to be 1/9 and 2/9 ml for Sn and Pb, respectively.
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.