论文标题
铁磁体和抗铁磁铁中的惯性自旋波
Inertial spin waves in ferromagnets and antiferromagnets
论文作者
论文摘要
从理论上讲，自旋动力学中的惯性效应将在超短时间尺度上出现，但它们的实验特征通常是模棱两可的。在这里，我们在存在惯性效应的情况下计算铁磁体和两种公共抗铁磁素的自旋光谱。它显示了如何相互杂交的进动和螺旋自旋波，从而导致频率重新归一化，组速度，有效的旋风磁比和有效阻尼参数。讨论了区分惯性动力学的特征和在常规模型中可以解释的类似效果之间的可能方法。
Inertial effects in spin dynamics are theoretically predicted to emerge at ultrashort time scales, but their experimental signatures are often ambiguous. Here, we calculate the spin-wave spectrum in ferromagnets and two-sublattice antiferromagnets in the presence of inertial effects. It is shown how precession and nutation spin waves hybridize with each other, leading to the renormalization of the frequencies, the group velocities, the effective gyromagnetic ratios and the effective damping parameters. Possible ways of distinguishing between the signatures of inertial dynamics and similar effects explainable within conventional models are discussed.
