论文标题
耦合的Skyrmion呼吸模式在合成铁磁铁和抗fiferromagnets中
Coupled skyrmion breathing modes in synthetic ferri- and antiferromagnets
论文作者
论文摘要
我们介绍了由平面外交流磁场或原型合成铁磁性和抗铁磁磁性三利尺结构中的平面交流磁场或自旋扭矩激发的天际动态共振模式的微磁模拟。计算出的功率光谱中观察到的特征表现出对单个磁性层之间耦合强度的系统依赖性，并且与纯相内和反相呼吸模式以及呼吸和自旋波模式的杂交有关，这些模式是被考虑的圆形几何形状的特征。这些谐振振荡模式的实验检测可以为Skyrmion感应应用提供一种手段，并为具有抗磁性磁性层间交换偶联的多层堆栈中天空状态的总体表征。
We present micromagnetic simulations of the dynamic GHz-range resonance modes of skyrmions excited by either out-of-plane ac magnetic fields or spin torques in prototypical synthetic ferri- and antiferromagnetic trilayer structures. The observed features in the calculated power spectra exhibit a systematic dependence on the coupling strength between the individual magnetic layers and are related to pure in-phase and anti-phase breathing modes as well as to hybridizations of breathing and spin-wave modes that are characteristic for the considered circular-shaped geometry. The experimental detection of these resonant oscillation modes may provide a means for skyrmion sensing applications and for the general characterization of skyrmion states in multilayer stacks with antiferromagnetic interlayer exchange coupling.
