Time-evolution of the GaAs(0 0 1) pre-roughening process
classification
❄️ cond-mat.mes-hall
cond-mat.mtrl-sci
keywords
gaasprocessformationsurfaceatomic-scalecovereddominatesdynamics
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The GaAs(0 0 1) surface is observed to evolve from being perfectly flat to a surface half covered with one-monolayer high spontaneously formed GaAs islands. The dynamics of this process are monitored with atomic-scale resolution using scanning tunneling microscopy. Surprisingly, pit formation dominates the early stages of island formation. Insight into the nucleation process is reported.
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