title: Investigating hybridization schemes of coupled split-ring resonators by electron impacts.
abstract: We present a comprehensive theoretical and experimental investigation of the plasmon hybridization of coupled split-ring resonators by means of the electron energy-loss spectroscopy. Split-ring resonator is a key element in design of negative refractive index metamaterials, and has been therefore intensively studied in the literature. Here, our aim is the study of hybridization effects for higher-order non-dipolar modes, which have been not investigated beforehand. We provide a complete scheme of the multimodal distribution of the coupled and single-element split-ring resonators, with a precise attention to the hybridization of those modes according to the induced moments. Our study suggests a clear dominance of electric and magnetic dipole moments over higher-order modes in the far-field radiation spectrum.
authors.forename: Qiuqun
authors.initials: Q
authors.lastname: Liang
authors.forename: Yuren
authors.initials: Y
authors.lastname: Wen
authors.forename: XiaoKe
authors.initials: X
authors.lastname: Mu
authors.forename: Thomas
authors.initials: T
authors.lastname: Reindl
authors.forename: Weixing
authors.initials: W
authors.lastname: Yu
authors.forename: Nahid
authors.initials: N
authors.lastname: Talebi
authors.forename: Peter A
authors.initials: PA
authors.lastname: van Aken