Li Tong, Luo Lan, Li Xinrui, Dove Martin T, Zhang Sijie, He Jianhong, Zhang Zhiyou
Opt Express. 2023 Jul 17;31(15):24469-24480. doi: 10.1364/OE.492380.
In this paper, we use weak measurement to study the mixed magneto-optical Kerr effects (MOKEs) in a magnetic single layer of Co and in organic/Co bilayer films. The relationship between the amplified shift and the MOKE parameters is theoretically established and then experimentally observed as a function of both the magnetization intensity and the magnetization direction in magnetic thin films with an arbitrary magnetization. Furthermore, we experimentally observe a magnetic coupling at the organic/ferromagnetic interface. Due to this being a robust coupling, there is a significant dependence of the amplified shift with the thickness of the organic layer. This work has value for its application in the magnetic measurement technique for the more general case based on weak measurement.
在本文中，我们使用弱测量来研究钴磁性单层以及有机/钴双层薄膜中的混合磁光克尔效应（MOKEs）。从理论上建立了放大位移与磁光克尔效应参数之间的关系，然后在具有任意磁化方向的磁性薄膜中，作为磁化强度和磁化方向的函数进行了实验观测。此外，我们通过实验观测到了有机/铁磁界面处的磁耦合。由于这是一种强耦合，放大位移对有机层厚度有显著依赖性。这项工作对于基于弱测量的更一般情况下的磁测量技术应用具有价值。
