Tuning edge-localized spin waves in magnetic microstripes by proximate magnetic structures
Tuning edge-localized spin waves in magnetic microstripes by proximate magnetic structures
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DOI：
10.1103/physrevb.100.174434
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发表时间：
2019-07
影响因子：
3.7
通讯作者：
Zhizhi Zhang;Zhizhi Zhang;M. Vogel;M. Jungfleisch;Axel Hoffmann;Axel Hoffmann;Y. Nie;V. Novosad
中科院分区：
文献类型：
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作者：
Zhizhi Zhang;Zhizhi Zhang;M. Vogel;M. Jungfleisch;Axel Hoffmann;Axel Hoffmann;Y. Nie;V. Novosad
利用微磁学模拟方法研究了边缘局域自旋波在有/无近磁微结构的钇铁石榴石（YIG）微条中的传播。还观察到坡莫合金（Py）条纹的存在下的色散曲线的分裂。在YIG条纹的两个边缘上的E-SW在相同的频率下具有不同的波长、群速度和衰减长度。Py条纹的作用被认为是不均匀的静态偶极场的源，而没有与YIG的动态耦合。这项工作开辟了新的视角，创新的SW干扰为基础的逻辑器件的设计。
The propagation of edge localized spin waves (E-SWs) in yttrium iron garnet (YIG) microstripes with/without the proximate magnetic microstructures is investigated by micromagnetic simulations. A splitting of the dispersion curve with the presence of permalloy (Py) stripe is also observed. The E-SWs on the two edges of YIG stripe have different wavelengths, group velocities, and decay lengths at the same frequencies. The role of the Py stripe was found to be the source of the inhomogeneous static dipolar field without dynamic coupling with YIG. This work opens new perspectives for the design of innovative SW interference-based logic devices.