论文标题
非肾脏表面磁弹性动力学
Nonreciprocal surface magnetoelastic dynamics
论文作者
论文摘要
在最近的实验中，我们研究了介电非磁性底物的表面声音子与接近纳米磁铁的镁之间的非偏射磁弹性相互作用。磁化动力学会在纳米磁体的边缘上施加旋转力，从而导致由于其旋转摩托锁锁定而导致非偏置相互作用与表面声子的相互作用。这种耦合引起了表面声子传输的非次数，并通过高（普通）磁性质量的几个（数十个）磁性纳米线产生了几乎完整的声子二极管效应。相位敏感的微波传递也是非偏置的，可以通过磁化动力学来拾取相干声子的清晰信号。使用Landauer-Büttiker形式主义预测通过进攻磁化来对声子进行非转录泵送。
Motivated by recent experiments, we investigate the nonreciprocal magnetoelastic interaction between the surface acoustic phonons of dielectric non-magnetic substrates and magnons of proximity nanomagnets. The magnetization dynamics exerts rotating forces at the edges of the nanomagnet that causes the nonreciprocal interaction with surface phonons due to its rotation-momentum locking. This coupling induces the nonreciprocity of the surface phonon transmission and a nearly complete phonon diode effect by several (tens of) magnetic nanowires of high (ordinary) magnetic quality. Phase-sensitive microwave transmission is also nonreciprocal that can pick up clear signals of the coherent phonons excited by magnetization dynamics. Nonreciprocal pumping of phonons by precessing magnetization is predicted using Landauer-Büttiker formalism.
