PMID: 19113776Dec 31, 2008Paper

One-dimensional defect-mediated diffusion of Si adatoms on the Si(111)-(5 x 2)-Au surface

Physical Review Letters
E BussmannB S Swartzentruber

Abstract

Using scanning tunneling microscopy, we determine that the one-dimensional diffusion of Si adatoms along the Si(111)-(5 x 2)-Au surface reconstruction occurs by a defect-mediated mechanism. Distinctive diffusion statistics, especially correlations between sequential adatom displacements, imply that the displacements are triggered by an interaction with a defect that is localized to the adatom. The defect is intrinsic and thermally activated. The measured diffusion statistics are modeled accurately by a Monte Carlo simulation. The measured adatom diffusion activation barrier is 1.24 +/- 0.08 eV.

References

Oct 15, 1996·Physical Review. B, Condensed Matter·T Hasegawa, S Hosoki
Jun 25, 1990·Physical Review Letters·G L Kellogg, P J Feibelman
Jan 9, 1995·Physical Review Letters· Cowell Senft D, G Ehrlich
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Citations

Apr 7, 2010·Physical Review Letters·E Bussmann, B S Swartzentruber
Aug 17, 2020·Physical Review. E·Edwin E Mozo LuisFábio D A Aarão Reis
Feb 18, 2015·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Mariusz Krawiec
Jul 30, 2011·Physical Review Letters·P NitaA Stȩpniak
Sep 21, 2011·Physical Review Letters·Matthew S J MarshallMartin R Castell

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