论文标题
合成反铁磁铁中的可调木棒耦合
Tunable magnon-magnon coupling in synthetic antiferromagnets
论文作者
论文摘要
在这项工作中，我们在室温下使用微波光谱学研究了合成反铁磁铁（SYAFS）中的镁粘结耦合。清楚地观察到了两种不同的自旋波模式，并在退化点杂交。我们提供了一个现象学模型，该模型捕获了耦合现象，并在实验上证明了耦合强度由平面外倾斜角以及层间交换场控制。我们从数值上表明，SYAFS中的自旋电流介导阻尼在影响耦合强度方面发挥了作用。
In this work, we study magnon-magnon coupling in synthetic antiferromagnets (SyAFs) using microwave spectroscopy at room temperature. Two distinct spin-wave modes are clearly observed and are hybridised at degeneracy points. We provide a phenomenological model that captures the coupling phenomena and experimentally demonstrate that the coupling strength is controlled by the out-of-plane tilt angle as well as the interlayer exchange field. We numerically show that a spin-current mediated damping in SyAFs plays a role in influencing the coupling strength.
