The effect of a modulated flux on the growth of thin films

Details The effect of a modulated flux on the growth of thin films The effect of a modulated flux on the growth of thin films

1997-11-14

arxiv.org/abs/cond-mat/9711131v1

Surface Science Letters Vol 384/1-3, pp 823-827, (20-july-1997)

Physics

Condensed Matter

Materials Science

10 pages, Revtex

Scientific paper

10.1016/S0039-6028(97)00254-9

Thin films are usually obtained by depositing atoms with a continuous flux. We show that using a chopped flux changes the growth and the morphology of the film. A simple scaling analysis predicts how the island densities change as a function of the frequency of the chopped flux in simple cases where aggregation is irreversible. These predictions are confirmed by computer simulations. We show that the model can be used to obtain information on the diffusion or the evaporation of the adatoms. The model is also useful to understand the growth of thin films prepared by pulsed sources.

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