The structural change of Si(111)-√3 x √3-Ag surfaces caused by atomic hydrogen adsorption was studied using low-energy ion scattering spectroscopy. Computer simulations of ion scattering spectra were carried out for various kinds of the morphology of the Ag deposit. Comparison of the simulation results with the observed change of the spectra reveals that the Ag monolayer with the √3 x √3-Ag structure was transformed into small Ag(111) clusters epitaxially grown on Si(111) by hydrogen adsorption at room temperature.

Hydrogen-Induced Reconstruction of Si(111)-√3-Ag Surface Studied by TOF-ICISS. T.Kinoshita, Y.Tanaka, K.Sumitomo, F.Shoji, K.Oura, I.Katayama: Applied Surface Science, 1992, 60-61, 183-9