All-optical Hall effect by the dynamic toroidal moment in a cavity-based metamaterial
arXiv:1303.4577 · doi:10.1103/PhysRevB.87.245429
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.
21 pages, 6 figures
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- A Generic Minimal Discrete Model for Toroidal Moments and Its Experimental Realization
- Tuning toroidal dipole resonances in dielectric metamolecules by an additional electric dipolar response
- Seeing the unseen: observation of an anapole with dielectric nanoparticles