ar X iv : c on d - m at / 9 90 11 98 v 1 2 0 Ja n 19 99 Stability and diffusion of surface clusters
نویسنده
چکیده
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 ∝ 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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ar X iv : n uc l - th / 9 90 10 97 v 2 3 0 Ja n 19 99 1 The Landau - Migdal Parameters , g ′ NN and g ′ N ∆ and Pion
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