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Stability and diffusion of surface clusters

T. Muller·W. Selke
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Abstract

Using kinetic Monte Carlo simulations and a bond-counting ansatz, thermal stability and diffusion of an adatom island on a crystal surface are studied. At low temperatures, the diffusion constant $D$ is found to decrease for a wide range of island sizes like $D \propto N^{-α}$, where $α$ is close to one, $N$ being the number of adatoms in the cluster. By heating up the surface, the system undergoes a phase transition above which the island disappears. Characteristics of that transition are discussed.

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T. Muller, W. Selke. 1999-01-20. Stability and diffusion of surface clusters. https://doi.org/10.1007/s100510050885

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