Point Magnetic Dipoles Forming Toroidal Anapole

Networks and Systems in Cybernetics: Proceedings of 12th Computer Science On-line Conference. Vol.2. Lecture Notes in Networks and Systems. Vol.723 2023
Dmitrii Borovkov, Vjačeslavs Bobrovs

The role of multipolar expansion of the localized current is essential in a broad range of disciplines in the physics of nowadays. It is actively used in such problems as the design of nanoantennas in photonics or the description of exotic states of matter. The toroidal multipoles are the third group of multipoles which complements the electric and magnetic ones. The investigation of toroidal multipoles is important because of their role in the formation of non-radiating sources, so-called anapole states. The further study showed that there are also exist the higher-order toroidal dipoles or mean-square radii, which are equivalent. Here we suggest the structure which consists of point magnetic dipoles and supports the toroidal anapole state, which is obtained with the destructive interference of electric toroidal dipole with the first mean-square radius of the electric toroidal dipole. We also present an analytical condition for toroidal anapole with this system of point magnetic dipoles placed in two circles. #CSOC1120.

Atslēgas vārdi
Anapole | Multipole Decomposition | Toroidal Dipole
DOI
10.1007/978-3-031-35317-8_23
Hipersaite
https://link.springer.com/chapter/10.1007/978-3-031-35317-8_23

Borovkov, D., Bobrovs, V. Point Magnetic Dipoles Forming Toroidal Anapole. No: Networks and Systems in Cybernetics: Proceedings of 12th Computer Science On-line Conference. Vol.2. Lecture Notes in Networks and Systems. Vol.723. Cham: Springer Nature, 2023. 249.-253.lpp. ISBN 978-3-031-35316-1. e-ISBN 978-3-031-35317-8. ISSN 2367-3370. e-ISSN 2367-3389. Pieejams: doi:10.1007/978-3-031-35317-8_23

Publikācijas valoda
English (en)