Formation of nanosize silicides films on the Si(111) and Si(100) surfaces by low-energy ion implantation

The formation of nanosize silicides films by implantation of B, P, Ba, and alkali metal atoms in Si(111) and Si(100) followed by thermal annealing is studied by electron spectroscopy and slow-electron diffraction methods. It is shown that implantation of ions with a large dose $D >$ 10$^{16}$ cm$^{-2}$ and short-term heating lead to the formation of thin silicides films with new surface superstructures: Si(111)–$(\sqrt{3}\times\sqrt{3})$R30$^\circ$–B, Si(100)-2 $\times$ 2Ba, Si(100)-2 $\times$ 2Ba, Si(111)-1 $\times$ 1P, etc.