Scanning Tunneling Microscopy Study of Single Pb Atom Diffusion on Si(111)7×7 and Si(111)5×5 Surfaces
The diffusion of single Pb atoms on Si(111)7×7 and Si(111)5×5 surfaces has been investigated in real time by scanning tunneling microscopy (STM). The STM results show that single Pb atoms are highly mobile at room temperature inside (7×7) or (5×5) half-cells but diffuse at very low rates to neighbor half-cells.
KeywordsScanning Tunneling Microscopy Single Atom Semiconductor Surface Atom Diffusion Scanning Tunneling Microscopy Image
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