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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:
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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