Off-lattice Kinetic Monte Carlo simulations of Stranski-Krastanov-like growth
Michael Biehl, Florian Much
TL;DR
This paper uses off-lattice Kinetic Monte Carlo simulations to model strained heteroepitaxial crystal growth, capturing the Stranski-Krastanov growth mode with multilayer islands forming after initial pseudomorphic growth.
Contribution
It introduces a simplified (1+1)-dimensional off-lattice Kinetic Monte Carlo model to simulate Stranski-Krastanov growth, highlighting the formation of multilayer islands due to strain.
Findings
Reproduction of Stranski-Krastanov growth mode in simulations
Observation of strain-induced multilayer island formation
Identification of pseudomorphic growth ending with island emergence
Abstract
We investigate strained heteroepitaxial crystal growth in the framework of a simplifying (1+1)-dimensional model by use of off-lattice Kinetic Monte Carlo simulations. Our modified Lennard-Jones system displays the so-called Stranski-Krastanov growth mode: initial pseudomorphic growth ends by the sudden appearance of strain induced multilayer islands upon a persisting wetting layer.
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Taxonomy
TopicsTheoretical and Computational Physics · Advanced Thermodynamics and Statistical Mechanics · nanoparticles nucleation surface interactions