Magnetization dynamics in magnonic structures with different geometries: interfaces, notches and waveguides
Magnetization dynamics in magnonic structures with different geometries: interfaces, notches and waveguides
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DOI：
10.1088/1361-648x/aa6bd1
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发表时间：
2017-06-01
影响因子：
2.7
通讯作者：
Munzenberg, M.
中科院分区：
文献类型：
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作者：
Mansurova, M.;von der Haar, J.;Munzenberg, M.
20年前超快磁化动力学的发现导致了各种各样的实验技术，以高时间分辨率探索磁性材料中的现象。本文研究了自旋波包在不同磁振子晶体连续磁膜界面上的宽带激发。类似于拓扑带绝缘体表面上的受保护的导电状态，这些界面表现出表面自旋波模式，该模式从晶体传播到连续膜中。传播距离取决于所施加磁场的方向以及晶体的表面几何形状。
The discovery of ultrafast magnetization dynamics 20 years ago has led to a broad variety of experimental techniques to explore phenomena in magnetic materials with high temporal resolution. In the current article we present a study dealing with broadband excitation of spin-wave packets at different magnonic crystal continuous magnetic film interfaces. Similar to protected conducting states on the surfaces of topological band insulators, these interfaces exhibit surface spin-wave modes that propagate out of the crystal into the continuous film. The propagation distance depends on the direction of the applied magnetic field as well as the surface geometry of the crystal.