Abstract
The experimental results of CO diffusion perpendicular and parallel to steps on vicinal Pt(111) surfaces were presented. While diffusion perpendicular to step subjects to an impediment due to the additional trapping at the step sites, diffusion parallel to steps shows enhancement over terrace in various ways. At high temperatures, all three types of stepped surfaces show the contribution to mass transport by the fast step edge diffusion. At low temperatures, a third channel, which exists only for A- and AB-type steps, also contributes to a diffusion enhancement.
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Xiao, X. (2001). Step Effects on Surface Diffusion. In: Tringides, M.C., Chvoj, Z. (eds) Collective Diffusion on Surfaces: Correlation Effects and Adatom Interactions. NATO Science Series II: Mathematics, Physics and Chemistry, vol 29. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0816-7_11
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DOI: https://doi.org/10.1007/978-94-010-0816-7_11
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