The diffusion of one-dimensional clusters on Au and Pt(110) (1x2) was studied by molecular dynamics simulations. Both metals were modelled by many-body tight-binding potentials. The energy barriers for the elementary diffusion mechanism (concerted jump, leapfrog, dissociation, etc.) were calculated, for chains of up to six atoms, by the nudged elastic band method. The consistency of the results on energy barriers was checked by high-temperature simulations.

Diffusion of One-Dimensional Clusters on Au and Pt(110) (1x2). Montalenti, F., Baletto, F., Ferrando, R.: Surface Science, 2000, 454-456, 575-