A single step growth model with leapfrog diffusion mechanism
We study the multilayer growth of a single step model defined on a hexagonal lattice in d=1+1 dimensions. The growth model comprises deposition events, inlayer and interlayer diffusions, in particular, the newly discovered leapfrog mechanism. The model is applied to the (1×2) reconstructed (110) gold surface by using realistic energy barriers for the different diffusion processes. We solve the model by an exact finite-size calculation. Our results predict cross-channel ripples formation already at T=130K on the gold surface. The temperature dependence of the ripple slope in the stationary state is also predicted by means of exact growth rate calculations up to 180K.
Year of publication: |
2003
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Authors: | Hontinfinde, F ; Ferrando, R ; Levi, A.C |
Published in: |
Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 319.2003, C, p. 36-48
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Publisher: |
Elsevier |
Subject: | Stochastic growth model | Leapfrog diffusion | Gold(110) surface | Exact solution | Ripple instability |
Saved in:
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