SWITCHING DYNAMICS BETWEEN THE METASTABLE ORDERED MAGNETIC STATE AND A NONMAGNETIC GROUND STATE: A POSSIBLE MECHANISM FOR PHOTOINDUCED FERROMAGNETISM
SWITCHING DYNAMICS BETWEEN THE METASTABLE ORDERED MAGNETIC STATE AND A NONMAGNETIC GROUND STATE: A POSSIBLE MECHANISM FOR PHOTOINDUCED FERROMAGNETISM
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DOI：
10.1103/physrevb.58.9303
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发表时间：
1998-04
影响因子：
3.7
通讯作者：
M. Nishino;K. Yamaguchi;S. Miyashita
中科院分区：
文献类型：
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作者：
M. Nishino;K. Yamaguchi;S. Miyashita
通过研究统计力学模型的亚稳磁化动力学，我们提出了光致磁化的开关机制。用平均场理论和Monte Carlo模拟方法研究了具有亚稳性质的典型模型Blume-Capel（BC）模型的平衡和非平衡性质。我们证明了在系统参数的一系列变化中磁化强度的可逆变化，这将模拟可逆的光诱导磁化强度。计算结果的影响进行了讨论，最近的普鲁士蓝类似物的实验结果。
By studying the dynamics of the metastable magnetization of a statistical mechanical model we propose a switching mechanism of photoinduced magnetization. The equilibrium and nonequilibrium properties of the Blume-Capel (BC) model, which is a typical model exhibiting metastability, are studied by mean field theory and Monte Carlo simulation. We demonstrate reversible changes of magnetization in a sequence of changes of system parameters, which would model the reversible photoinduced magnetization. Implications of the calculated results are discussed in relation to the recent experimental results for prussian blue analogs.