论文标题
可调磁性诱导的透明透明光谱在镁麦克农耦合Y3FE5O12/Permalloy Bilayers中
Tunable magnetically induced transparency spectra in magnon-magnon coupled Y3Fe5O12/permalloy bilayers
论文作者
论文摘要
杂交宏伟的系统具有多种特征量子现象，例如磁诱导的透明度（MIT）和Purcell效应，这些效应被认为对将来的相干量子信息处理有用。在这项工作中，我们通过更改磁场方向在Y3FE5O12（YIG）/Permalloy（Py）磁磁体偶联系统中实验表明了可调的MIT效应。通过探测PY和YIG的磁化效应，我们确定了由PY的均匀模式与Yig的垂直站立旋转波模式之间的模式杂交引起的MIT光谱的清晰特征。通过更改外部磁场方向，我们观察到YIG的自旋波模式与PY的均匀模式之间的可调耦合强度，并在应用平面外磁场时。理论上，即使在恒定的界面交换耦合下，理论上通过对PY和YIG磁化的几何考虑来解释该观察结果。我们的发现表明，与混合镁质平台一起研究可调相似现象的很高希望。
Hybrid magnonic systems host a variety of characteristic quantum 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 the Y3Fe5O12(YIG)/Permalloy(Py) magnon-magnon coupled system via changing the magnetic field orientations. By probing the magneto-optic effects of Py and YIG, 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.
