Steering effects on growth instability during step-flow growth of Cu on Cu(1,1,17)

Details Steering effects on growth instability during step-flow growth of Cu on Cu(1,1,17) Steering effects on growth instability during step-flow growth of Cu on Cu(1,1,17)

2004-08-13

arxiv.org/abs/cond-mat/0408318v1

Physics

Condensed Matter

Materials Science

5 pages

Scientific paper

10.1103/PhysRevB.71.075414

Kinetic Monte Carlo simulation in conjunction with molecular dynamics simulation is utilized to study the effect of the steered deposition on the growth of Cu on Cu(1,1,17). It is found that the deposition flux becomes inhomogeneous in step train direction and the inhomogeneity depends on the deposition angle, when the deposition is made along that direction. Steering effect is found to always increase the growth instability, with respect to the case of homogeneous deposition. Further, the growth instability depends on the deposition angle and direction, showing minimum at a certain deposition angle off-normal to (001) terrace, and shows a strong correlation with the inhomogeneous deposition flux. The increase of the growth instability is ascribed to the strengthened step Erlich Schwoebel barrier effects that is caused by the enhanced deposition flux near descending step edge due to the steering effect.

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