Stable crystalline lattices in two-dimensional binary mixtures of dipolar particles

被引：55

作者：

Assoud, L. ^{[1
]}

Messina, R. ^{[1
]}

Loewen, H. ^{[1
]}

机构：

[1] Univ Dusseldorf, Inst Theoret Phys Weiche Materie 2, D-40225 Dusseldorf, Germany

来源：

EPL | 2007年 / 80卷 / 04期

关键词：

D O I：

10.1209/0295-5075/80/48001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The phase diagram of binary mixtures of particles interacting via a pair potential of parallel dipoles is computed at zero temperature as a function of composition and the ratio of their magnetic susceptibilities. Using lattice sums, a rich variety of different stable crystalline structures is identified including A(m) B-n structures. (A (B) particles correspond to large (small) dipolar moments.) Their elementary cells consist of triangular, square, rectangular or rhombic lattices of the A particles with a basis comprising various structures of A and B particles. For small (dipolar) asymmetry there are intermediate AB(2) and A(2)B crystals besides the pure A and B triangular crystals. These structures are detectable in experiments on granular and colloidal matter. Copyright (c) EPLA, 2007.

引用

页数：6

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