Abstract In this work, a 2D magneto-plasmonic grating structure combining materials with ferromagnetic and plasmonic properties is demonstrated. NiFe composite ferromagnetic material, as an active medium with tunable physical properties, and Au metal, as a plasmonic excitation layer, were the materials of choice. Here, we have experimentally investigated the active control of the plasmonic characteristics in Au/NiFe bilayer by the action of an external magnetic field, as well as the switching effect of the system. The active plasmonic control, can be achieved by the magnetization switching of the ferromagnetic material, opening a new path in the development of active plasmonic devices. To our best knowledge, this is the first demonstration of such a magneto-optical plasmonic switch based on the coupling of plasmons with magneto-optical active materials, in which the response time was estimated to be in the range of microseconds.

中文翻译：

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NiFe图案化纳米结构中基于表面晶格共振的磁等离子体开关

摘要 在这项工作中，展示了一种结合具有铁磁和等离子体特性的材料的二维磁等离子体光栅结构。NiFe 复合铁磁材料作为具有可调物理特性的活性介质，Au 金属作为等离子体激发层，是首选材料。在这里，我们通过实验研究了通过外部磁场的作用以及系统的开关效应对 Au/NiFe 双层中等离子体特性的主动控制。有源等离子体控制可以通过铁磁材料的磁化开关来实现，为有源等离子体器件的发展开辟了一条新途径。据我们所知，