Tunable Magnetically Induced Transparency Spectra in Magnon-Magnon Coupled Y3Fe5O12/ Permalloy Bilayers
Tunable Magnetically Induced Transparency Spectra in Magnon-Magnon Coupled Y3Fe5O12/ Permalloy Bilayers
复制标题
磁振子-磁振子耦合 Y3Fe5O12/坡莫合金双层中的可调谐磁感应透明光谱
DOI：
10.1103/physrevapplied.17.044010
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发表时间：
2022
影响因子：
4.6
通讯作者：
Qu, Hongwei
中科院分区：
文献类型：
--
作者：
Xiong, Yuzan;Inman, Jerad;Li, Zhengyi;Xie, Kaile;Bidthanapally, Rao;Sklenar, Joseph;Li, Peng;Louis, Steven;Tyberkevych, Vasyl;Qu, Hongwei
混合磁振子系统具有磁感应透明（MIT）和珀塞尔效应等多种特征现象，它们被认为对未来的相干量子信息处理非常有用。在这项工作中，我们通过改变磁场的方向，实验证明了在磁振子-磁振子耦合系统中可调谐的MIT效应。通过探测Py和YIG薄膜的磁光效应，我们发现了由Py的均匀模和YIG的垂直自旋驻波模之间的模式杂交引起的MIT谱的明显特征。通过改变外部磁场的方向，我们观察到一个可调的耦合强度之间的YIG的自旋波模式和Py的均匀模式，在应用程序的面外磁场。这一观察结果在理论上解释的倾斜磁场下，即使在一个恒定的界面交换耦合的Py和YIG磁化的几何考虑。我们的研究结果显示出很高的承诺，调查可调相干现象与混合磁振子平台。
Hybrid magnonic systems host a variety of characteristic phenomena such as the magnetically induced transparency (MIT) and Purcell effect, which are considered useful for future coherent quantum-information processing. In this work, we experimentally demonstrate a tunable MIT effect in themagnon-magnon coupled system via changing the magnetic field orientations. By probing the magneto-optic effects of Py and YIG thin films, we identify clear features of MIT spectra induced by the mode hybridization between the uniform mode of Py and the perpendicular standing spin-wave modes of YIG. By changing the external magnetic field orientations, we observe a tunable coupling strength between the YIG’s spin-wave modes and the Py’s uniform mode, upon the application of an out-of-plane magnetic field. This observation is theoretically interpreted by a geometrical consideration of the Py and YIG magnetization under the oblique magnetic field even at a constant interfacial exchange coupling. Our findings show high promise for investigating tunable coherent phenomena with hybrid magnonic platforms.