The Kinetics of Oxygen-Induced Faceting of Cu(115) and Cu(119) Surfaces
作者： N. Reinecke , E. Taglauer
DOI: 10.1016/S0039-6028(00)00272-7
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摘要: Faceting of the vicinal Cu(115) and Cu(119) surfaces due to oxygen adsorption was studied by scanning tunelling microscopy (STM). Both reconstruct into two kinds {104}-type facets a third facet determined macroscopic surface orientation. This is {113}-oriented for {100}-oriented Cu(119). On all Cu-O-Cu chains are developed that energetically favored. oxygen-saturated (exposure between 100 1000 L) size formation kinetics, as could be shown varying sample temperature during (between 410 620 K) or rate (oxygen pressure 5.6 x 10 -9 2 -5 mbar). dependence can formally described equations derived nucleation growth mechanisms. But experiments with lower exposure (10 20 indicate proceeds in several steps. In case, small (100)-facets along step edges seen regions final reconstruction. An atomistic model this proposed.
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