Mutual control of coherent spin waves and magnetic domain walls in a magnonic device
Mutual control of coherent spin waves and magnetic domain walls in a magnonic device
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DOI：
10.1126/science.aau2610
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发表时间：
2019-11-29
期刊：
影响因子：
56.9
通讯作者：
Liu, Luqiao
中科院分区：
文献类型：
--
作者：
Han, Jiahao;Zhang, Pengxiang;Liu, Luqiao
自旋波器件的成功实现需要对自旋波传播进行有效的调制。利用钴/镍多层膜，我们实验证明了纳米宽的磁畴壁可以以非挥发的方式控制相干自旋波的相位和大小。我们进一步证明，自旋波可以反过来利用磁振子自旋电流产生的自旋传递转矩效应来改变磁畴壁的位置。自旋波和磁畴壁之间的相互作用为实现全磁子自旋电子器件提供了可能，其中一个自旋波信号可以通过重新配置磁畴结构来控制其他自旋波信号。
The successful implementation of spin-wave devices requires efficient modulation of spin-wave propagation. Using cobalt/nickel multilayer films, we experimentally demonstrate that nanometer-wide magnetic domain walls can be applied to manipulate the phase and magnitude of coherent spin waves in a nonvolatile manner. We further show that a spin wave can, in turn, be used to change the position of magnetic domain walls by means of the spin-transfer torque effect generated from magnon spin current. This mutual interaction between spin waves and magnetic domain walls opens up the possibility of realizing all-magnon spintronic devices, in which one spin-wave signal can be used to control others by reconfiguring magnetic domain structures.