Pulses and disorder in a continuum version of step-bunching dynamics

被引：43

作者：

Misbah, C

PierreLouis, O

机构：

[1] Laboratoire de Spectrométrie Physique, Université Joseph Fourier (CNRS) Grenoble I, Cedex, 38402

来源：

PHYSICAL REVIEW E | 1996年 / 53卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.53.R4318

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Starting from the Burton-Cabrera-Frank model in the presence of electromigration, we derive a nonlinear continuum version of step dynamics, whew steps undergo a bunching instability. The obtained equation for the steps density is a mixture of the Korteweg-de Vries equation, which leads to solitons, and the Burger equation, which exhibits spatiotemporal chaos. For a small dispersive term, spatiotemporal chaotic pulses prevail. On increasing this term, we observe gradually a transition towards regular pulses.

引用

页码：R4318 / R4321

页数：4

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