论文标题
各向异性铁磁体中的惯性旋转动力学理论
Theory of inertial spin dynamics in anisotropic ferromagnets
论文作者
论文摘要
对惯性自旋动力学的最新实验观察呼吁对铁磁体中磁共振的理论框架进行整体重新评估。在这里，我们以类似于无处不在的smit-beljers形式主义的形式得出了惯性旋转系统的世俗方程。我们发现，与非惯性病例相比，进攻性铁磁共振的频率降低了。我们还发现，由于存在磁各向异性和施加的磁场，通常增加了螺母共振的频率。我们获得了使用非惯性理论术语的世俗方程和近似值的精确解，从而可以方便地估计惯性效应。
Recent experimental observation of inertial spin dynamics calls upon holistic reevaluation of the theoretical framework of magnetic resonance in ferromagnets. Here, we derive the secular equation of an inertial spin system in analogy to the ubiquitous Smit-Beljers formalism. We find that the frequency of precessional ferromagnetic resonances is decreased as compared to non-inertial case. We also find that the frequency of nutational resonances is generally increased due to the presence of magnetic anisotropy and applied magnetic field. We obtain exact solutions of the secular equation and approximations that employ the terminology of non-inertial theory and thus allow for convenient estimates of the inertial effects.
