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Title: Intermixing of intrabasin and interbasin diffusion of a single Ag atom on Si(111)-7(7 X 7)
Authors: Wang, Kedong
Chen, Gang
Zhang, Chun
Loy, Michael M.
Xiao, Xudong
Keywords: Ag atoms
Interbasin diffusion
Scanning tunneling microscopy
Issue Date: 31-Dec-2008
Citation: Physical review letters, v. 101, 266107, 2008
Abstract: Using scanning tunneling microscopy, we studied the diffusion of single Ag atoms within the Si(111)-7(7 X 7) unit cell. A striking difference was observed in the time-dependent tunneling current spectra for Ag atoms moving in the unfaulted and faulted half unit cells, with a dual-time characteristic in the former but a single time in the latter. Our observations demonstrate the importance of the stacking fault in affecting the interaction between Ag atoms and the Si(111)-7(7 X 7)surface and can be understood in terms of an asymmetric interplay between intrabasin and interbasin diffusion.
Rights: Physical Review Letters © Copyright 2008 American Physical Society. The Journal's web site is located at
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