Low-energy deposition of Co onto Co islands on Ag(100) : Effect on submonolayer growth

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 o...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2005-02, Vol.71 (7), p.075411.1-075411.8, Article 075411
Main Authors: FRANTZ, J, JAHMA, M. O, NORDLUND, K, KOPONEN, I. T
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COBALT
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Cross-disciplinary physics: materials science
rheology
DEPOSITION
DISSOCIATION
EV RANGE 10-100
Exact sciences and technology
FRAGMENTATION
ION BEAMS
IRRADIATION
MATERIALS SCIENCE
Methods of deposition of films and coatings
film growth and epitaxy
MOLECULAR DYNAMICS METHOD
Physics
SILVER
SIMULATION
THIN FILMS
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.71.075411