Interaction Effects between Magnetic and Chiral Building Blocks: A New Route for Tunable Magneto-chiral Plasmonic Structures
Interaction Effects between Magnetic and Chiral Building Blocks: A New Route for Tunable Magneto-chiral Plasmonic Structures
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DOI：
10.1021/acsphotonics.5b00158
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发表时间：
2015-09-01
期刊：
影响因子：
7
通讯作者：
Giessen, Harald
中科院分区：
文献类型：
--
作者：
Armelles, Gaspar;Cebollada, Alfonso;Giessen, Harald
我们提出了一种新的主动磁手征系统，包括一个分离的Au/Co多层垂直磁各向异性和等离子体手性低聚物。Au/Co多层膜和手性结构单元之间的电磁相互作用，受它们的间距控制，在控制磁光和手性活性方面起着相关的作用，从而对手性光响应产生强烈的影响。由于相互作用引起的盘共振在低聚物的失谐，手性光学活性随相互作用强度的增加而降低。通过控制相互作用强度来调节系统的磁-和手征-光学性质的可能性为在宽光谱范围内制造磁-手征系统打开了大门，这由构成磁性和手征组分以及它们的电磁相互作用决定。
We propose a novel active magneto-chiral system consisting of a separated Au/Co multilayer with perpendicular magnetic anisotropy and plasmonic chiral oligomers. The electromagnetic interaction between the Au/Co multilayer and chiral building blocks, which is governed by their separation distance, plays a relevant role in the control of both magneto-optical and chiral activity, resulting in a strong effect on the chiro-optical response. Due to the interaction-induced detuning of the disk resonances in the oligomers, the chiro-optical activity decreases with increasing interaction strength. The possibility to tune both magneto- and chiro-optical properties of the system by controlling the interaction strength opens the door for the fabrication of magneto-chiral systems in a wide spectral range, which is determined by both constituting magnetic and chiral components, as well as their electromagnetic interaction.