Germanium adsorption on Ag(111): An AES-LEED and STM study
Abbreviated Journal Title
J. Nanosci. Nanotechnol.
STM; AES; LEED; ge nanostructures; self-organization; silver; auger; SCANNING-TUNNELING-MICROSCOPY; X-RAY-DIFFRACTION; INTERFACE FORMATION; SURFACE; GROWTH; SILICON; PHOTOEMISSION; AG(001); FILMS; GE; Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials; Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
The adsorption of germanium on Ag(111) has been investigated using Scanning Tunneling Microscopy, Auger Electron Spectroscopy and Low Energy Electron Diffraction. From the shape of the Auger peak-to-peak versus time curves, we deduce that at room temperature the growth mode is nearly layer-by-layer at least for the first two layers. In the sub-monolayer range, the growth starts by the formation of a (root 3 x root 3)R30 degrees surface superstructure which is complete at 1/3 monolayer coverage. Beyond this coverage a rectangular c(root 3 x 7) superstructure is observed. STM images reveal that this last reconstruction is formed by an ordered arrangement of self-assembled Ge tetramers giving rise to a surprising undulation of the surface.
Journal of Nanoscience and Nanotechnology
"Germanium adsorption on Ag(111): An AES-LEED and STM study" (2007). Faculty Bibliography 2000s. 7498.