Dipolar field-induced spin-wave waveguides for spin-torque magnonics
Dipolar field-induced spin-wave waveguides for spin-torque magnonics
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DOI：
10.1063/1.4905869
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发表时间：
2015-01-12
影响因子：
4
通讯作者：
Demokritov, S. O.
中科院分区：
文献类型：
--
作者：
Demidov, V. E.;Urazhdin, S.;Demokritov, S. O.
我们使用高分辨率成像来研究自旋波在磁振子波导中的传播，磁振子波导由微观图案的偶极磁场产生。我们表明，在这种波导的自旋波模式的特性强烈依赖于它们的几何形状。特别地，通过调整几何参数，可以实现边缘和中心波导模式的场致约束，从而能够控制自旋波传输特性。所研究的波导结构是特别有前途的磁振子器件利用自旋扭矩现象的实施。(C)2015 AIP Publishing LLC.
We use high-resolution imaging to study the propagation of spin waves in magnonic waveguides created by the dipolar magnetic fields of microscopic patterns. We show that the characteristics of spin-wave modes in such waveguides depend strongly on their geometry. In particular, by tuning the geometrical parameters, field-induced confinement for both the edge and the center waveguide modes can be achieved, enabling control over the spin-wave transmission characteristics. The studied waveguiding structures are particularly promising for the implementation of magnonic devices utilizing spin-torque phenomena. (C) 2015 AIP Publishing LLC.