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arXiv · 1303.4577

All-optical Hall effect by the dynamic toroidal moment in a cavity-based metamaterial

Zheng-Gao Dong·Jie Zhu·Xiaobo Yin·Jiaqi Li·Changgui Lu·Xiang Zhang
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Abstract

Dynamic dipolar toroidal response is demonstrated by an optical plasmonic metamaterial composed of double disks. This response with a hotspot of localized E-field concentration is a well-behaved toroidal cavity mode that exhibits a large Purcell factor due to its deep-subwavelength mode volume. All-optical Hall effect (photovoltaic) due to this optical toroidal moment is demonstrated numerically, in mimicking the magnetoelectric effect in multiferroic systems. The result shows a promising avenue to explore various optical phenomena associated with this intriguing dynamic toroidal moment.

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Zheng-Gao Dong, Jie Zhu, Xiaobo Yin, Jiaqi Li, Changgui Lu, Xiang Zhang. 2013-03-19. All-optical Hall effect by the dynamic toroidal moment in a cavity-based metamaterial. https://doi.org/10.1103/physrevb.87.245429

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