Observation of condensed phases of quasiplanar core-softened colloids

被引：97

作者：

Osterman, N. ^{[1
]}

Babic, D. ^{[1
]}

Poberaj, I. ^{[1
]}

Dobnikar, J. ^{[2
]}

Ziherl, P. ^{[1
,2
]}

机构：

[1] Univ Ljubljana, Dept Phys, SI-1000 Ljubljana, Slovenia

[2] Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.99.248301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We experimentally study the condensed phases of repelling core-softened spheres in two dimensions. The dipolar pair repulsion between superparamagnetic spheres trapped in a thin cell is induced by a transverse magnetic field and softened by suitably adjusting the cell thickness. We scan a broad density range and we materialize a large part of the theoretically predicted phases in systems of core-softened particles, including expanded and close-packed hexagonal, square, chainlike, stripe or labyrinthine, and honeycomb phase. Further insight into their structure is provided by Monte Carlo simulations.

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页数：4

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