Configuration dependent critical nuclei in the self assembly of magic clusters
Abstract
Evidence for the formation of various 2-D structures possessing different numbers of Co–Si magic clusters (size ∼10.0 ± 0.5 Å), configurations and lifetimes are studied in real time on a Si(111)-(7 × 7) surface at elevated temperature in the STM. Observations of individual cluster diffusion, attachment and detachment dynamics resolve unequivocally the question of self