Non-linear Relaxation of the Photo-induced High Spin State in Spin-Crossover Solids: Effect of Correlations
Non-linear Relaxation of the Photo-induced High Spin State in Spin-Crossover Solids: Effect of Correlations
复制标题
自旋交叉固体中光致高自旋态的非线性弛豫：相关效应
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
E. Codjovi
中科院分区：
文献类型：
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作者：
K. Boukheddaden;F. Varret;S. Salunke;J. Linares;E. Codjovi
我们研究了一个基于对近似的微观模型，用于研究低温下自旋交叉固体中光致高自旋态的动力学性质。该模型使用类伊辛哈密顿量，并结合了远程和短程相互作用。后者的随机处理为宏观的短期和长期阶参量提供了一组两个耦合的微分方程，成功地再现了实验松弛曲线的主要特征。
We investigate a microscopic model based on the pair approximation, for the dynamical properties of the photo-induced high-spin state in spin-crossover solids at low temperature. The model uses the Ising-like hamiltonian and combines long- and short-range interactions. The stochastic treatment of the latter provides a set of two coupled differential equations for the macroscopic short- and long-range order parameters, which reproduce successfully the main features of the experimental relaxation curves.