A new method was proposed for the determination of the activation energies for surface diffusion on large monocrystals. The activation energy for the surface diffusion of 1-dimensional or 2-dimensional islands, and the energy which was required in order to remove an adatom from an adsorbate island, were determined. In the case of Rh, the latter energy was between 0.67 and 1eV. It was found that the energy for the diffusion of 4-atom groups was 0.84eV.

J.Kolaczkiewicz, E.Bauer: Surface Science, 1991, 256[1-2], 87-93