Stochastic resonance in the two-dimensional q-state clock models

被引：5

作者：

Park, Hye Jin ^{[1
]}

Baek, Seung Ki ^{[2
]}

Kim, Beom Jun ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea

[2] Pukyong Natl Univ, Dept Phys, Pusan 608737, South Korea

来源：

PHYSICAL REVIEW E | 2014年 / 89卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

ISING-MODEL; SYSTEMS; TRANSITIONS; SPIN;

D O I：

10.1103/PhysRevE.89.032137

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We numerically study stochastic resonance in the two-dimensional q-state clock models from q = 2 to 7 under a weak oscillating magnetic field. As in the mean-field case, we observe double resonance peaks, but the detailed response strongly depends on the direction of the field modulation for q >= 5 where the quasiliquid phase emerges. We explain this behavior in terms of free-energy landscapes on the two-dimensional magnetization plane.

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页数：5

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