论文标题
高压下光引起的自旋跨界的超快动力学
Ultrafast dynamics of light-induced spin crossovers under high pressure
论文作者
论文摘要
在高压下具有自旋跨界的磁绝缘子的多电体模型中，我们研究了压力温度平面中的平均场相图和突然激发非平衡旋转状态的动力学。我们获得了磁化强度，高自旋/低自旋职业数量的不同弛豫以及用于外部压力不同值的金属氧键长度。我们发现磁化强度的长期振荡没有压力，并且在较小的外部压力下。接近交叉压力，光滑的松弛伴随着一组敏锐的磁化和HS/LS职业数量的尖锐强烈的线性振荡，伴随着Franck Condon共振。
Within the multielectron model of magnetic insulator with spin crossover under high pressure we have studied the mean field phase diagrams in pressure temperature plane and dynamics of a sudden excited non equilibrium spin state. We obtain the different relaxation of the magnetization, high spin/low spin occupation numbers, and the metal oxygen bond length for different values of the external pressure. We found the long living oscillations of magnetization without pressure and at small external pressure. Close to crossover pressure the smooth relaxation is accompanied with a set of sharp strongly non linear oscillations of magnetization and HS/LS occupation numbers that are accompanied by the Franck Condon resonances.
