The low-coverage growth of Cu islands deposited on W(110) was studied by kinetic Monte Carlo simulation. The model included deposition, diffusion of monomers, diffusion along island edges and reversible aggregation on centered rectangular lattice with anisotropy of diffusion barriers. The simulations were performed at 150 to 280K with fluxes changing from 10-7 to 10-3Ml/s. Island morphology ranges from ramified structures (fractals) at low temperatures to compact shapes at higher temperatures. The low temperature growth regime consists of standard diffusion limited aggregation regime and extended fractal regime. The existence of EF regime at bcc(110) surface resulted from the inhibition of island equilibration by two neighboring bonds of edge adatom to an island in a centered rectangular lattice. The fractals obtained in EF regime had arms that widened with increasing temperature as was observed in experiments on other systems. The sub-monolayer morphology diagram in the (flux, temperature) plane was presented and the region of possible fractal observation was indicated.

Kinetic Monte Carlo Study of Fractal Growth with Edge Diffusion and Reversible Aggregation on a BCC(110) Surface. J.M.Rogowska, M.Maciejewski: Vacuum, 2001, 63[1-2], 91-7