标题： 正常金属-铁磁体异质结构中的动态自旋相互作用和进动自旋惯性 显示英文标题

标题： Dynamically generated spin-interactions and nutational spin inertia in normal metal-ferromagnet heterostructures

摘要： 我们考虑正常金属-铁磁体异质结构中的自旋动力学，重点研究来自动态Ruderman-Kittel-Kasuya-Yosida (RKKY)相互作用的自旋-进动项。 我们发现，由于铁磁体的时间反演对称性被破坏，自旋-进动项在自旋空间中是各向异性的。 这与在顺磁态中得到的结果形成对比，在顺磁态中，进动项在自旋空间中是各向同性的。 我们计算了这对从Landau-Lifshitz-Gilbert方程导出的磁化动力学的影响。 特别是，由于时间反演对称性的破坏，我们预测由于进动自旋动力学会产生第三种铁磁共振。 该共振频率可以通过施加外部磁场进行调节。 我们认为这是自旋系统中存在进动的有力指示。 显示英文摘要

摘要： We consider the spin dynamics of a normal metal-ferromagnet heterostructure, with emphasis on spin-nutation terms arising from a dynamical Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction. We find that the spin-nutation term is anisotropic in spin space due to the broken time-reversal symmetry of the ferromagnet. This contrasts with what one obtains in the paramagnetic state, where the nutation term is isotropic in spin space. We compute the effects this has on the magnetization dynamics derived from a Landau-Lifshitz-Gilbert equation. In particular, due to broken time-reversal symmetry, we predict a third ferromagnetic resonance due to nutational spin dynamics. This resonance frequency is tunable by applying an external magnetic field. We propose this as a strong indicator for the existence of nutation in spin systems.