Locked-floating-solid to locked-smectic transition in colloidal systems

被引：39

作者：

Baumgartl, J ^{[1
]}

Brunner, M ^{[1
]}

Bechinger, C ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Phys, D-70550 Stuttgart, Germany

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.93.168301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate two-dimensional melting of a colloidal system in the presence of a one-dimensional periodic substrate potential created by two interfering laser beams. We study the commensurability ratio p=root3a/2d=2 with a the mean particle distance and d the period of the periodic potential. In contrast with the previously investigated case p=1, here we observe that melting of the locked-floating solid occurs via a novel locked-smectic phase, predicted by recent theoretical studies.

引用

页码：168301 / 1

页数：4

共 17 条

[11]

NELSON DR, 1983, PHASE TRANSITIONS CR, V7, P1

[12]

PROKROVSKY VL, 1986, SOLITONS, P71

[13] Novel phases and reentrant melting of two-dimensional colloidal crystals [J].

Radzihovsky, L ;

Frey, E ;

Nelson, DR .

PHYSICAL REVIEW E, 2001, 63 (03) :0315031-03150334

[14] TWO-DIMENSIONAL MELTING [J].

STRANDBURG, KJ .

REVIEWS OF MODERN PHYSICS, 1988, 60 (01) :161-207

[15] Phase transitions of soft disks in external periodic potentials: A Monte Carlo study [J].

Strepp, W ;

Sengupta, S ;

Nielaba, P .

PHYSICAL REVIEW E, 2002, 66 (05) :13-056109

[16]

STREPP W, IN PRESS

[17] Experimental study of laser-induced melting in two-dimensional colloids [J].

Wei, QH ;

Bechinger, C ;

Rudhardt, D ;

Leiderer, P .

PHYSICAL REVIEW LETTERS, 1998, 81 (12) :2606-2609

← 1 2 →