纳米磁体中磁爆燃的多能级模型
Multilevel model for magnetic deflagration in nanomagnet crystals
摘要：
我们扩展了现有的理论模型，用于确定纳米磁体晶体中的磁爆燃的特征。首次考虑了所有能级，计算了塞曼能量、爆燃速度等参数。它降低了最终温度，并显着改变自旋翻转前的传播速度。我们还考虑了强横向磁场的影响，并表明，后者显着修改的自旋态结构，导致有关自旋翻转的激活能的不确定性。我们的前速度预测的晶体的锰$_{12}$ -醋酸盐在纵向磁场是在更好的协议与实验数据比以前的简化模型的结果。
英文摘要：
We extend the existing theoretical model for determining the characteristic features of magnetic deflagration in nanomagnet crystals. For the first time, all energy levels are accounted for calculation of the the Zeeman energy, the deflagration velocity, and other parameters. It reduces the final temperature and significantly changes the propagation velocity of the spin-flipping front. We also consider the effect of a strong transverse magnetic field, and show that the latter significantly modifies the spin-state structure, leading to an uncertainty concerning the activation energy of the spin flipping. Our front velocity prediction for a crystal of Mn$_{12}$-acetate in a longitudinal magnetic field is in much better agreement with experimental data than the previous reduced-model results.
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