Atomic Arrangement of the Si(111)-√3×√3-Ag Structure Derived from Low-Energy Ion-Scattering Spectroscopy

Abstract

Si(111)-√3×√3-Ag surface structure has been studied by low-energy ion-scattering spectroscopy using neon ions with an energy of 500 eV, combined with LEED-AES. It has been proposed that Ag atoms giving rise to the √3 structure are slightly embedded below the outermost Si layer, including consequent displacements of the substrate Si atoms.