Authors: J. Amar and J. Yu
Affilation: University of Toledo, United States
Pages: 163 - 165
Keywords: epitaxy, molecular dynamics, metals, steering
Recent experiments on metal epitaxial growth indicate that a high-angle of incidence the long-range attraction of the surface to incoming atoms can lead to steering effects near step-edges which significantly modify the growth and contribute to a growth instability. Here we present molecular dynamics simulation results obtained using embedded atom potentials for Cu/Cu(100) growth carried out in order to measure the strength of the steering effect due to short-range interactions. Our results indicate that even at normal incidence, the short-range attraction can lead to a significant uphill current which can significantly increase the selected mound angle and surface roughness. The results of kinetic Monte Carlo simulation of Cu/Cu(100) growth with steering effects included are also presented and compared with recent experiments.