Diffusion processes and growth on stepped metal surfaces

Details Diffusion processes and growth on stepped metal surfaces Diffusion processes and growth on stepped metal surfaces

1995-08-08

arxiv.org/abs/cond-mat/9508025v1

Physics

Condensed Matter

3 pages, revtex, complete file available from ftp://rock.helsinki.fi/pub/preprints/tft/ or at http://www.physics.helsinki.fi

Scientific paper

10.1103/PhysRevB.52.R8715

We study the dynamics of adatoms in a model of vicinal (11m) fcc metal surfaces. We examine the role of different diffusion mechanisms and their implications to surface growth. In particular, we study the effect of steps and kinks on adatom dynamics. We show that the existence of kinks is crucially important for adatom motion along and across steps. Our results are in agreement with recent experiments on Cu(100) and Cu(1,1,19) surfaces. The results also suggest that for some metals exotic diffusion mechanisms may be important for mass transport across the steps.

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