Unstable step meandering with elastic interactions

Unstable step meandering with elastic interactions

We report on theoretical investigations of the influence of step interactions due to elasticity on unstable step meandering during molecular beam homoepitaxy. It is shown that elasticity causes coarsening of the cellular structure of the meander found in a previous work. The time dependence of step...

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Veröffentlicht in:Physical review letters 2001-06, Vol.86 (24), p.5538-5541
Hauptverfasser: Paulin, S, Gillet, F, Pierre-Louis, O, Misbah, C
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Sprache:eng
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CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DIFFUSION
ELASTICITY
MOLECULAR BEAMS
ROUGHNESS
TIME DEPENDENCE
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container_issue 24
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container_title Physical review letters
container_volume 86
creator Paulin, S
Gillet, F
Pierre-Louis, O
Misbah, C
description We report on theoretical investigations of the influence of step interactions due to elasticity on unstable step meandering during molecular beam homoepitaxy. It is shown that elasticity causes coarsening of the cellular structure of the meander found in a previous work. The time dependence of step roughness is found to be robust, behaving as t(1/2). The lateral length scale coarsening is shown to be sensitive to the underlying physical mechanisms. In particular, the typical length follows the law t(alpha), with alpha = 1/6 or 1/4 depending on whether line diffusion is negligibly small or not.
doi_str_mv 10.1103/PhysRevLett.86.5538
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subjects CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DIFFUSION
ELASTICITY
MOLECULAR BEAMS
ROUGHNESS
TIME DEPENDENCE
title Unstable step meandering with elastic interactions
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