Toward a Detailed Understanding of Si(111)- Surface and Adsorbed Ge Nanostructures: Fabrications, Structures, and Calculations
Figure 1
Schematic diagram for Si(111)-7 7 “DAS” model
[2]. (a) Top view: atoms on (111) layers with the decreasing heights indicated
by dots of decreasing sizes. The sites of corner adatom, center adatom, and
rest atom in FHUC (labeled CoA, CeA, and R, resp.), and in UHUC (labeled CoA',
CeA' and R', resp.), are identified by arrows. Positions B2 in FHUC, and in UHUC are also denoted by
arrows. (b) Side view: dangling bonds are located
at the topmost of all adatoms, rest atoms, and holes.
