STABILITY OF PERIODIC DOMAIN-STRUCTURES IN A 2-DIMENSIONAL DIPOLAR MODEL

被引：198

作者：

NG, KO

VANDERBILT, D

机构：

[1] Department of Physics and Astronomy, Rutgers University, Piscataway

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.52.2177

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the energetic ground states of a model two-phase system with 1/r(3) dipolar interactions in two dimensions. The model exhibits spontaneous formation of two kinds of periodic domain structures. A striped domain structure is stable near half-filling, but as the area fraction is changed, a transition to a hexagonal lattice of almost-circular droplets occurs. The stability of the equilibrium striped domain structure against distortions of the boundary is demonstrated, and the importance of hexagonal distortions of the droplets is quantified. The relevance of the theory for physical surface systems with elastic, electrostatic, or magnetostatic 1/r(3) interactions is discussed.

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页码：2177 / 2183

页数：7

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