Article,

Experimental study of surface diffusion rate enhancement along steps: CO on Pt(111)

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Surf. Sci., 436 (1-3): L661 - L665 (1999)
DOI: DOI: 10.1016/S0039-6028(99)00641-X

Abstract

Surface diffusion of CO parallel to steps on vicinal Pt(111) surfaces has been studied by a linear optical diffraction method. Other than the two normal diffusion channels, namely diffusion over terraces and along step edges, a third channel, which enhances diffusion significantly even at low temperatures, is observed for the first time. The new channel exists only on A- and AB-type stepped surfaces but not on B-type stepped surfaces.

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