Nano Science and Technology Institute
Nanotech 2002 Vol. 2
Nanotech 2002 Vol. 2
Technical Proceedings of the 2002 International Conference on Computational Nanoscience and Nanotechnology
Chapter 8: Extended-Scale Atomistics

Effects of Steering in Metal Epitaxial Growth

Authors:J. Amar and J. Yu
Affilation:University of Toledo, US
Pages:163 - 165
Keywords:epitaxy, molecular dynamics, metals, steering
Abstract: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.
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