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Diffusion of particles over dynamically disordered lattice
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SYSNO ASEP 0359396 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Diffusion of particles over dynamically disordered lattice Author(s) Tarasenko, Alexander (FZU-D) RID, ORCID
Jastrabík, Lubomír (FZU-D) RID, ORCIDSource Title Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076
Roč. 13, č. 6 (2011), s. 2300-2306Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords diffusion ; Monte Carlo simulations ; dynamic disordered lattice Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects KAN301370701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) 1M06002 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100522 - FZU-D (2005-2011) UT WOS 000286628200046 DOI 10.1039/c0cp01886d Annotation Using kinetic Monte Carlo simulations we have investigated the diffusion of particles over a lattice with moving atoms in the framework of a simple lattice-gas model of a reconstructive surface. The particle migration over the static and dynamic lattices differs considerably.The dynamic lattice reconstruction changes substantially the particle diffusion coefficient.The Arrhenius dependencies are quantitatively different. An interesting peculiarity of the particle migration is the formation of defectons - local lattice deformations around the adsorbed particles. In certain ranges of the system parameters (jump rates of the substrate atoms and adsorbed particles) the adsorbed particles cause local displacements of the nearest substrate atoms, resulting in deeper adsorption sites and lower jump rates. Such particle self-trapping produces a characteristic minimum on the Arrhenius dependencies. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2012
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