论文标题
通过交换自旋波的纳米磁铁的非热相干耦合
Non-Hermitian coherent coupling of nanomagnets by exchange spin waves
论文作者
论文摘要
非热物理学最近在光学和光子学上引起了很多关注。较少探索的是非热镁，它提供了利用磁系统中不可避免的镁质或自旋波的耗散的机会。在这里，我们通过快速自旋波（具有低于50 nm波长的快速自旋波）证明了两个远处的纳米磁体的非热相干耦合。两个纳米磁体中的镁元素在单向上锁定，并由镁旋转扭矩和自旋波传播控制的相移。我们的结果对于需要单向信息传输的模拟神经形态计算具有吸引力。
Non-Hermitian physics has recently attracted much attention in optics and photonics. Less explored is non-Hermitian magnonics that provides opportunities to take advantage of the inevitable dissipation of magnons or spin waves in magnetic systems. Here we demonstrate non-Hermitian coherent coupling of two distant nanomagnets by fast spin waves with sub-50 nm wavelengths. Magnons in two nanomagnets are unidirectionally phase-locked with phase shifts controlled by magnon spin torque and spin-wave propagation. Our results are attractive for analog neuromorphic computing that requires unidirectional information transmission.
