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Colossal enhancement of the magnetic dipole moment by exploiting lattice coupling in metasurfaces

Rahimzadegan, Aso ORCID iD icon 1; Alaee, Rasoul 1; Karamanos, Theodosios D. 1; Boyd, Robert W.; Rockstuhl, Carsten 1,2
1 Institut für Theoretische Festkörperphysik (TFP), Karlsruher Institut für Technologie (KIT)
2 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)

Abstract:

An artificial magnetic response is not only intellectually intriguing but also key to multiple applications. While previously suitably structured metallic particles and high-permittivity dielectric particles have been used for this purpose, here, we highlight the possibility of exploiting lattice effects to significantly enhance an intrinsically weak magnetic dipole moment of a periodically arranged scatterer. We identify the effective magnetic dipole moment as it is modulated by the lattice and coupled to other electromagnetic multipole moments the scatterer can sustain. Besides a more abstract consideration on the base of parametrized Mie coefficients to study the theoretical upper limit, we present an actual particle that shows an enhancement of the magnetic dipole moment by 100 with respect to what is attainable as a maximal value for an isolated particle.


Postprint §
DOI: 10.5445/IR/1000137579
Veröffentlicht am 07.11.2022
Originalveröffentlichung
DOI: 10.1364/JOSAB.430539
Scopus
Zitationen: 2
Dimensions
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für Theoretische Festkörperphysik (TFP)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2021
Sprache Englisch
Identifikator ISSN: 0740-3224, 1520-8540
KITopen-ID: 1000137579
HGF-Programm 43.32.02 (POF IV, LK 01) Designed Optical Materials
Erschienen in Journal of the Optical Society of America B: Optical Physics
Verlag Optica Publishing Group (OSA)
Band 38
Heft 9
Seiten C217-C224
Nachgewiesen in Dimensions
Scopus
Web of Science
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