Multipole Excitations and Nonlocality in 1d Plasmonic Nanostructures.

ABSTRACT: Efficient simulation methods for taking nonlocal effects in nanostructures into account have been developed, but they are usually computationally expensive or provide little insight into underlying physics. A multipolar expansion approach, among others, holds promise to properly describe electromagnetic interactions in complex nanosystems. Conventionally, the electric dipole dominates in plasmonic nanostructures, while higher order multipoles, especially the magnetic dipole, electric quadrupole, magnetic quadrupole, and electric octopole, can be responsible for many optical phenomena. The higher order multipoles not only result in specific optical resonances, but they are also involved in the cross-multipole coupling, thus giving rise to new effects. In this work, we introduce a simple yet

SUBMITTER: Goncharenko AV 

PROVIDER: S-EPMC10144308 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature