Spin-wave control using dark modes in chiral magnonic resonators
Spin-wave control using dark modes in chiral magnonic resonators
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DOI：
10.1103/physrevb.104.054437
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发表时间：
2021-08-26
影响因子：
3.7
通讯作者：
Kruglyak, V. V.
中科院分区：
文献类型：
--
作者：
Fripp, K. G.;Shytov, A. V.;Kruglyak, V. V.
我们对在磁性薄膜中传播并从中尺度手性磁振子谐振器散射的自旋波的幅度和相位进行了分析和数值建模。我们的计算表明，谐振器所承载的磁振子暗模式传播的自旋波具有非常强的手性散射，其强度超过了其准均匀模式的散射。我们制定了波导谐振器系统用作高效自旋波二极管和移相器的条件。当使用可用的铁磁材料作为谐振器时，这两种应用被发现是可行的。
We modeled, both analytically and numerically, the magnitude and phase of spin waves propagating in thin magnetic films and scattered from mesoscale chiral magnonic resonators. Our calculations reveal a remarkably strong chiral scattering of propagating spin waves from magnon dark modes hosted by the resonator, exceeding in strength the scattering from its quasiuniform mode. We formulate conditions for the waveguide-resonator system to be used as an efficient spin-wave diode and as a phase shifter. Both these applications are found to be feasible when using the available ferromagnetic materials for the resonators.