Continuous structural transitions in quasi-one-dimensional classical Wigner crystals

被引:39
作者
Piacente, G. [1 ]
Hai, G. Q. [1 ]
Peeters, F. M. [2 ]
机构
[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
[2] Univ Antwerp, Dept Phys, B-2020 Antwerp, Belgium
基金
巴西圣保罗研究基金会;
关键词
IONIC-CRYSTALS;
D O I
10.1103/PhysRevB.81.024108
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We study the structural phase transitions in confined systems of strongly interacting particles. We consider infinite quasi-one-dimensional systems with different pairwise repulsive interactions in the presence of an external confinement following a power law. Within the framework of Landau's theory, we find the necessary conditions to observe continuous transitions and demonstrate that the only allowed continuous transition is between the single-and the double-chain configurations and that it only takes place when the confinement is parabolic. We determine analytically the behavior of the system at the transition point and calculate the critical exponents. Furthermore, we perform Monte Carlo simulations and find a perfect agreement between theory and numerics.
引用
收藏
页数:5
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