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

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arxiv 1303.4577 v1 pith:QNY3W6NA submitted 2013-03-19 cond-mat.mes-hall physics.optics

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 This is my paper
classification cond-mat.mes-hall physics.optics
keywords toroidaldynamiceffectmomentopticalall-opticaldemonstratedhall
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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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