Self-diffusion of Ag/Ag(100) was investigated using the semi-empirical surface embedded atom method potential. Many diffusion mechanisms, such as hopping, simple exchange, complicated exchange and a mechanism termed multiple-hopping were observed. Another model for explaining the complicated exchange mechanism was given. From Arrhenius behavior of the adatom and the statistical results, the active energies were obtained for simple exchange and hopping mechanisms respectively, they were 0.39 and 0.47eV.

A Molecular Dynamics Study of Self-Diffusion on Ag(100) Surface. Jun, Z., Lei, L.: Acta Physica Sinica, 1997, 46[12], 2424-5