STEP BUNCHING AS A CHAOTIC PATTERN-FORMATION PROCESS

被引：38
作者：
KANDEL, D
WEEKS, JD
机构：
[1] Institute for Physical Science and Technology, University of Maryland, College Park
来源：
PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 26期
关键词：
D O I：
10.1103/PhysRevLett.69.3758
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The dynamics of a simple model for step bunching during crystal growth is studied by propagating a disturbance into an unstable system of equidistant steps. Depending on the initial step spacing, we find a wide range of different bunching modes, leading to distinctive spatial patterns: periodic (with subharmonic bifurcations), chaotic, and intermittent. Marginal stability theory gives extremely accurate predictions of the velocity of the propagating front and the existence and location of one of the bifurcations.
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页码：3758 / 3761
页数：4
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