In-Situ Transmission Electron Microscopy of the Etching of Silicon (111) Surfaces by Oxygen
Keyword(s):
ABSTRACTSilicon (111) surfaces have been etched in-situ in a ultra-high vacuum transmission electron microscope. Surface steps are observed to flow during etching, so that Si atoms are removed only from steps. This is in contrast to the behavior during the formation of an oxide layer reported previously. The nucleation of steps and their interaction with surface impurities is described.
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