The dependence of the adatom diffusion on the strained (111) surface of Cu metal was investigated using molecular dynamics simulation. It was found that the diffusion coefficient of the Cu adatom on Cu surface decreased with increasing tensile strain at various temperatures. On the strained surface, the diffusion coefficient still exhibited approximately Arrhenius behavior. The main diffusion was the hopping diffusion. While, with the temperature or the tensile strain raised further, the exchange diffusion appeared. And its frequency will increase with these values.

Effect of Tensile Strain on Adatom Diffusion on Cu(111) Surface. Wang, Y.X., Pan, Z.Y., Li, Z.J., Wei, Q., Zang, L.K., Zhang Z.X.: Surface Science, 2003, 545[1-2], 137-42