6533b86dfe1ef96bd12c97c3
RESEARCH PRODUCT
Island Diffusion on Metal fcc (100) Surfaces
Tapio Ala-nissilaIsmo K. KoponenJuha MerikoskiJ. Heinonensubject
Surface (mathematics)Condensed Matter - Materials ScienceMaterials scienceCondensed matter physicsPhysicsCrossoverMonte Carlo methodMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesGeneral Physics and Astronomyfcc(100) surfaceFunction (mathematics)Monte Carlo simulationsadatomAlisland diffusionExponentDiffusion (business)Constant (mathematics)ScalingCudescription
We present Monte Carlo simulations for the size and temperature dependence of the diffusion coefficient of adatom islands on the Cu(100) surface. We show that the scaling exponent for the size dependence is not a constant but a decreasing function of the island size and approaches unity for very large islands. This is due to a crossover from periphery dominated mass transport to a regime where vacancies diffuse inside the island. The effective scaling exponents are in good agreement with theory and experiments.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-01-01 | Physical Review Letters |