Off-lattice Kinetic Monte Carlo simulations of strained heteroepitaxial growth

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dc.creatorBiehl, Michael
dc.creatorMuch, Florian
dc.creatorVey, Christian
dc.date2004-05-27
dc.date.accessioned2026-07-07T02:58:22Z
dc.date.available2026-07-07T02:58:22Z
dc.descriptionAn off-lattice, continuous space Kinetic Monte Carlo (KMC) algorithm is discussed and applied in the investigation of strained heteroepitaxial crystal growth. As a starting point, we study a simplifying (1+1)-dimensional situation with inter-atomic interactions given by simple pair-potentials. The model exhibits the appearance of strain-induced misfit dislocations at a characteristic film thickness. In our simulations we observe a power law dependence of this critical thickness on the lattice misfit, which is in agreement with experimental results for semiconductor compounds. We furthermore investigate the emergence of strain induced multilayer islands or "Dots" upon an adsorbate wetting layer in the so-called Stranski-Krastanov (SK) growth mode. At a characteristic kinetic film thickness, a transition from monolayer to multilayer islands occurs. We discuss the microscopic causes of the SK-transition and its dependence on the model parameters, i.e. lattice misfit, growth rate, and substrate temperature.
dc.description17 pages, 6 figures Invited talk presented at the MFO Workshop "Multiscale modeling in epitaxial growth" (Oberwolfach, Jan. 2004). Proceedings to be published in "International Series in Numerical Mathematics" (Birkhaeuser)
dc.identifierhttps://arxiv.org/abs/cond-mat/0405641
dc.identifierhttp://arxiv.org/abs/cond-mat/0405641
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24061
dc.subjectStatistical Mechanics
dc.subjectMaterials Science
dc.titleOff-lattice Kinetic Monte Carlo simulations of strained heteroepitaxial growth
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