Kinetic Roughening and Phase Ordering in the Two-Component Growth Model

Interplay between kinetic roughening and phase ordering is studied in a growth SOS model with two kinds of particles and Ising-like interaction by Monte Carlo simulations. We found that, for a sufficiently large coupling, growth is strongly affected by interaction between species. Surface roughness increases rapidly with coupling. Scaling exponents for kinetic roughening are enhanced with respect to homogeneous situation. Phase ordering which leads to the lamellar structure persisting for a long time is observed. Surface profiles in strong coupling regime have a saw-tooth form, with the correlation between the positions of local minima and the domain boundaries. Key words: Computer simulations; Ising models; Growth; Surface roughening; Surface structure, morphology, roughness and topography. PACS: 81.10.Aj, 68.35.Ct, 75.70Kw 1 Introduction Growth by vapour deposition is a technologically important process for producing high quality materials. During last years much progress has been ma..