Atomic Aggregation Processes in the Early Stages of Pt/Pt (111) Growth

The atomic aggregation processes in the earth stages of Pt/Pt (111) growth are studied by using kinetic Monte Carlo simulations. Our results show that the average neighbor coordination number of the atoms in a cluster is a function of temperature, agreeing well the experiment observations of scanning tunneling microscopy. The influence of diffusion barriers of various atomic processes on the morphology of islands is also studied. Different morphologies of the islands (dendritic, fractal, or compact islands ) are found.