mgr Krzysztof Pawlikowski

Pattern formation and surface diffusion in a model of charged

Mobility of particles on a solid surface have been investigated for many years. I will present a model of a two-dimensional system of charged particles and vacancies. The particles could move through the lattice and interact with isotropic forces, attractive or repulsive. Using Monte Carlo simulations I determined many properties such as order parameter, correlation function, mean-square displacement or formation of domains as a function of time, temperature, coverage, and range of interactions. I also estimate the tracer diffusion coefficient and the activation energy. I will show the analytic results only for nearest neighbor interactions.