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    Surface Science Wednesday Sessions
       Session SS1-WeM

Paper SS1-WeM10
Step Motion on the Cu(100)-(@sr@2x2@sr@2)R45°-O Surface

Wednesday, October 31, 2001, 11:20 am, Room 120

Session: Surface Diffusion
Presenter: S. Chiang, University of California, Davis
Authors: C.L.H. Devlin, Air Force Research Lab
J.P. Landry, University of California, Davis
N.C. Bartelt, Sandia National Laboratories
S. Chiang, University of California, Davis
Correspondent: Click to Email
Low energy electron microscopy (LEEM) was used to study the motion of single-atom-high steps on a Cu(100) surface covered with the (@sr@2x2@sr@2)R45°-O structure. Curved steps exhibited capillary wave motion, which was analyzed using Langevin Dynamics.@footnote 1@ From this analysis, the dominant mode of adatom diffusion (i.e., along steps or over terraces) was deduced. Parameters such as the step stiffness and kink activation energy were also discovered. @FootnoteText@ @footnote 1@ N.C. Bartelt and R.M. Tromp, Phys Rev B 54 (1996) 11731.