Surface diffusion of particles over bivariate trap lattices

• Main Authors: Tarasenko, Alexander, Jastrabik, Lubomir
• Other Authors: Academy of Sciences of the Czech Republic, Institute of Physics v.v.i.
• Format: Article
• Language: English
• Published: Universitätsbibliothek Leipzig 2015
• Subjects: Diffusion; Transport; diffusion; transport; ddc:530
• Online Access: http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-191662; http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-191662; http://www.qucosa.de/fileadmin/data/qucosa/documents/19166/diff_fund_11%282009%29103.pdf

We investigate the diffusion of particles on heterogeneous lattices with two kinds of nonequivalent sites. General analytical expressions for the chemical and jump diffusion coefficients have been derived in the case of strong inhomogeneity. We have calculated coverage dependencies of the diffusion coefficients and other necessary thermodynamic quantities for some representative values of the lateral pairwise interaction between the particles. The analytical data have been compared with the numerical data obtained by the kinetic Monte Carlo simulations. Almost perfect agreement between the respective results has been found.