Toroidal mode trapping in a magnetic meta-molecule

verfasst von

Tong Wu, Andrey B. Evlyukhin, Vladimir R. Tuz

Abstract

In this paper, we establish the relationship between the eigenmodes and the scattering characteristics of a meta-molecule made of magnetic disks from the point of view of the manifestation of its toroidal response. In particular, we examine the electric and magnetic dipole contributions to the scattering cross-sections obtained in the framework of the multipole decomposition method while accounting for the polarizability and magnetization induced in the structure by the field of incoming radiation. We find out that with increasing permeability, the toroidal mode is trapped in the meta-molecule due to the presence of its magnetization part, which may have a practical perspective in gyrotropy, permittivity, and permeability sensing.

Organisationseinheit(en)

PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme
Institut für Quantenoptik

Externe Organisation(en)

International Center of Future Science (ICFS)
Kharkov National University

Typ

Artikel

Journal

Journal of Physics D: Applied Physics

Band

57

Anzahl der Seiten

6

ISSN

0022-3727

Publikationsdatum

25.09.2024

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Elektronische, optische und magnetische Materialien, Physik der kondensierten Materie, Akustik und Ultraschall, Oberflächen, Beschichtungen und Folien

Elektronische Version(en)

https://doi.org/10.1088/1361-6463/ad7bc6 (Zugang: Geschlossen)