Amar J., Yu J.
University of Toledo, US
Keywords: epitaxy, metals, molecular dynamics, 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.
Journal: TechConnect Briefs
Volume: 2, Technical Proceedings of the 2002 International Conference on Computational Nanoscience and Nanotechnology
Published: April 22, 2002
Pages: 163 - 165
Industry sector: Advanced Materials & Manufacturing
Topic: Informatics, Modeling & Simulation
ISBN: 0-9708275-6-3