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Margolina A., Warriner H.E. — Growth in a Restricted Solid on Solid Model with Correlated Noise
Margolina A., Warriner H.E. — Growth in a Restricted Solid on Solid Model with Correlated Noise

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Название: Growth in a Restricted Solid on Solid Model with Correlated Noise

Авторы: Margolina A., Warriner H.E.

Аннотация:

We introduce correlated growth into a restricted solid on solid model (RSOS), a stochastic deposition model with a constraint on neighboring height differences. A two-dimensional lattice model is used in which particles are deposited via horizontal Levy flight steps with a step length distribution exponent f. Though RSOS is in the same universality class as ballistic deposition for uncorrelated deposition, it appears to depart from it for strong correlations. For f= 1, the short-range limit is reached and both exponents fl and X, which describe the dependence of surface width on time and strip length, tend to 1. For f > 1 we retreat to an enhanced algorithm, searching for growth sites which become excessively rare. We find an unusual short-time dependence, but g still tends to 1. The number of growth sites G shows saturation for f< 1, while for f~> 1 we observe G/L ~ 0 as the strip length L increases. Finally, we test directly the relationship of noise-noise correlation strength to f, and find that a direct comparison between correlated growth models and theoretical predictions for growth with correlated noise is so far unjustified.


Язык: en

Рубрика: Физика/

Тип: Статья

Статус предметного указателя: Неизвестно

ed2k: ed2k stats

Год издания: 1990

Количество страниц: 13

Добавлена в каталог: 13.10.2013

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