Study of the island morphology at the early stages of Fe/Mo(110) MBE growth

• Authors: Dmytro Goykolov , Miroslav Kotrla
• Languages of publication: EN

Abstracts

EN

We present theoretical study of morphology of Fe islands grown at Mo(110) surface in submonolayer MBE mode. We utilize atomistic SOS model with bond counting, and interactions of Fe adatom up to third nearest neighbors. We performed KMC simulations for different values of adatom interactions and varying temperatures. We have found that, while for the low temperature islands are fat fractals, for the temperature 500 K islands have faceted rhombic-like shape. For the higher temperature, islands acquire a rounded shape. In order to evaluate qualitatively morphological changes, we measured average aspect ratio of islands. We calculated dependence of the average aspect ratio on the temperature, and on the strength of interactions of an adatom with neighbors.

Keywords

EN

iron on molybdenum; sub-monolayer growth; island shape; solid-on-solid model; KMC simulation

Discipline

• 68.35.Fx: Diffusion; interface formation(see also 66.30.-h Diffusion in solids, for diffusion of adsorbates, see 68.43.Jk)
• 81.15.Aa: Theory and models of film growth

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2009
• Volume: 7
• Issue: 2
• Pages: 220-226

Dates

published

1 - 6 - 2009

online

26 - 4 - 2009

Contributors

author

Dmytro Goykolov

• Institute of Physics, Academy of Science of the Czech Republic, Na Slovance 2, Prague, 18221, Czech Republic

author

Miroslav Kotrla

• Institute of Physics, Academy of Science of the Czech Republic, Na Slovance 2, Prague, 18221, Czech Republic

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Identifiers

DOI

10.2478/s11534-008-0124-z