Nonreciprocal spin-wave channeling along textures driven by the Dzyaloshinskii-Moriya interaction
Nonreciprocal spin-wave channeling along textures driven by the Dzyaloshinskii-Moriya interaction
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DOI：
10.1103/physrevb.89.224408
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发表时间：
2014-06-13
影响因子：
3.7
通讯作者：
Stamps, Robert L.
中科院分区：
文献类型：
--
作者：
Garcia-Sanchez, Felipe;Borys, Pablo;Stamps, Robert L.
在具有强自旋轨道耦合的衬底上的超薄金属铁磁体可以表现出Dzyaloshinskii-Moriya(DM)形式的诱导手性相互作用。对于具有垂直各向异性的系统，DM相互作用的存在对电流驱动的磁区-壁运动具有重要的影响，并支持了涉及Skyrmions的可能的自旋电子应用。我们从理论上展示了由DM场相互作用驱动的自旋织构如何允许自旋波的非互易沟道，从而在磁线、点和磁场壁中产生可测量的特征。我们的结果为检测金属多层膜中诱导的DM相互作用和控制超薄纳米结构中的自旋波传播提供了方法。
Ultrathin metallic ferromagnets on substrates with strong spin-orbit coupling can exhibit induced chiral interactions of the Dzyaloshinskii-Moriya (DM) form. For systems with perpendicular anisotropy, the presence of DM interactions has important consequences for current-driven domain-wall motion and underpins possible spintronic applications involving skyrmions. We show theoretically howspin textures driven by the DMinteraction allow nonreciprocal channeling of spin waves, leading to measurable features in magnetic wires, dots, and domain walls. Our results provide methods for detecting induced DM interactions in metallic multilayers and controlling spin-wave propagation in ultrathin nanostructures.