Morphological instabilities of a thin film on a Penrose lattice: a Monte Carlo study

Details Morphological instabilities of a thin film on a Penrose lattice: a Monte Carlo study Morphological instabilities of a thin film on a Penrose lattice: a Monte Carlo study

2005-03-23

arxiv.org/abs/cond-mat/0503576v1

Physics Letters A, vol. 351, no6 (2006) pp.426-430

Physics

Condensed Matter

Materials Science

9 pages,5 figures

Scientific paper

10.1016/j.physleta.2005.11.023

We computed by a Monte Carlo method the thermal relaxation of a polycrystalline thin film deposited on a Penrose lattice. The thin film was modelled by a 2 dimensional array of elementary domains, which have each a given height. During the Monte Carlo process, the height of each of these elementary domains is allowed to change as well as their crystallographic orientation. After equilibrium is reached at a given numerical temperature, all elementary domains have changed their orientation into the same one and small islands appear, preferentially on the domains of the Penrose lattice located in the center of heptagons. This method is a new numerical approach to study the influence of the substrate and its defects on the islanding process of polycrystalline films.

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