Low-energy deposition of Co onto Co islands on Ag(100): Effect on submonolayer growth
- Accelerator Laboratory, P.O. Box 43, FIN-00014 University of Helsinki (Finland)
Using classical molecular dynamics (MD) methods and rate equations, we have studied the effect of Co deposition onto a Co island at a Ag(100) surface. In the MD simulations, Co atoms were deposited on islands of sizes from 2x2 to 6x6 atoms with an energy of 25 eV at an incident angle of 20 degrees off normal. From the MD simulation results, we determined the functional form of the fragmentation kernel used in the rate equations as well as its parameters. The MD results also showed that irradiation-induced detachment from the island is common, while dissociation events of the island are very rare. Studying the growth process using rate equations, which included the restrictions deduced from the MD results, gave us island size distributions that agree with experimentally measured distributions. Thus, our results show that the submonolayer growth process can be explained solely by irradiation-induced detachment from the island.
- OSTI ID:
- 20665134
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 71, Issue 7; Other Information: DOI: 10.1103/PhysRevB.71.075411; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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