Extremely high Q-factor metamaterials due to anapole excitation

Alexey A. Basharin, Vitaly Chuguevsky, Nikita Volsky, Maria Kafesaki, and Eleftherios N. Economou
Phys. Rev. B 95, 035104 – Published 3 January 2017

Abstract

We have designed and fabricated a metamaterial consisting of planar metamolecules which exhibit unusual, almost perfect anapole behavior in the sense that the electric dipole radiation is almost canceled by the toroidal dipole one, producing thus an extremely high Q-factor at the resonance frequency. Thus we have demonstrated theoretically and experimentally that metamaterials approaching ideal anapole behavior have very high Q-factor. The size of the system, at the millimeter range, and the parasitic magnetic quadrupole radiation are the factors limiting the size of the Q-factor. In spite of the very low radiation losses the estimated local fields at the metamolecules are extremely high, of the order of 104 higher than the external incoming field.

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  • Received 20 July 2016
  • Revised 30 November 2016

DOI:https://doi.org/10.1103/PhysRevB.95.035104

©2017 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Alexey A. Basharin1, Vitaly Chuguevsky1,2, Nikita Volsky1, Maria Kafesaki3, and Eleftherios N. Economou3

  • 1National University of Science and Technology MISiS, Moscow 119049, Russia
  • 2Voronezh State Technical University, Voronezh 394026, Russia
  • 3Foundation for Research and Technology Hellas (FORTH), Heraklion, Crete, Greece and University of Crete, Heraklion, Crete, Greece

See Also

A minimal discrete model for toroidal moments and its experimental realization

Hong Xiang, Lixin Ge, Liang Liu, Tianshu Jiang, Z. Q. Zhang, C. T. Chan, and Dezhuan Han
Phys. Rev. B 95, 045403 (2017)

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Vol. 95, Iss. 3 — 15 January 2017

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