2015
DOI: 10.1103/physrevb.91.235441
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Refined BCF-type boundary conditions for mesoscale surface step dynamics

Abstract: Deposition on a vicinal surface with alternating rough and smooth steps is described by a solid-on-solid model with anisotropic interactions. Kinetic Monte Carlo (KMC) simulations of the model reveal step-pairing in the absence of any additional step attachment barriers. We explore the description of this behavior within an analytic BCFtype step dynamics treatment. Without attachment barriers, conventional kinetic coefficients for the rough and smooth steps are identical, as are the predicted step velocities f… Show more

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Cited by 14 publications
(31 citation statements)
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“…It produces the scaling K ± ~ (ah)/(lk) 2 , as lk →∞. Note this latter scaling applies more generally than in the case of facile edge diffusion as demonstrated previously from analysis of the discrete 2D DDE for symmetric attachment barriers, h+ = h- [21].…”
Section: Discrete 1d Dde Model: Extraction Of K ± and Pmentioning
confidence: 90%
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“…It produces the scaling K ± ~ (ah)/(lk) 2 , as lk →∞. Note this latter scaling applies more generally than in the case of facile edge diffusion as demonstrated previously from analysis of the discrete 2D DDE for symmetric attachment barriers, h+ = h- [21].…”
Section: Discrete 1d Dde Model: Extraction Of K ± and Pmentioning
confidence: 90%
“…The behavior K ± ∼ a 3 h/(Lk) 2 from (17) illustrating the decrease of K ± with increasing Lk which is expected since incorporation at kinks is naturally inhibited. This dependence is key to understanding behavior during step flow on dimer-row reconstructed vicinal Si(100) or Ge(100) surfaces which exhibits alternating rough (or meandering) steps and smooth (or stiff steps) [18,21,27,28]. Rough (smooth) steps have low (high) Lk values, and thus high (low) K ± values.…”
Section: Resultsmentioning
confidence: 99%
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