Initial growth behavior of bismuth on Ag(111) and Au(111)

The Rashba effect of surface alloys semimetallic bismuth (Bi) is strongly related to its specific structural properties. initial growth behaviors Bi atoms on Ag(111) substrate and Au(111) are systematically investigated by combining scanning tunneling microscopy (STM) density flooding theory (DFT) in this paper. Continuous Ag<sub>2</sub>Bi alloy films formed preferentially at the step edge held room temperature; replace with low coordination number randomly distributed from single forming long-range ordered phase as coverage increases 0.33 ML 570 K. With increasing, converted into a <inline-formula><tex-math id="M3">\begin{document}$ p\times \sqrt{3} $\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="2-20211360_M3.jpg"/><graphic xlink:href="2-20211360_M3.png"/></alternatives></inline-formula> structure dealloying process. In contrary Ag(111), behavior temperature K consistent: adsorbed Au atom pairs 5 dispersed clusters densely packed region corners herringbone reconstruction when level below 0.40 ML; 0.60 ML, disordered gradually transform (<inline-formula><tex-math id="M4">\begin{document}$ \sqrt{37}\times \sqrt{37} xlink:href="2-20211360_M4.jpg"/><graphic xlink:href="2-20211360_M4.png"/></alternatives></inline-formula>) phase. Moreover, adsorption leads strain release. different suggest that interaction between plays key role. around under coverage.