Plasmonic Dispersion Relations and Intensity Enhancement of Metal–Insulator–Metal Nanodisks | Zendy

Gernot Schaffernak | Zendy; Markus Krug | Zendy; Martin Belitsch | Zendy; Marija Gašparić | Zendy; Harald Ditlbacher | Zendy; Ulrich Hohenester | Zendy; Joachim R. Krenn | Zendy; Andreas Hohenau | Zendy

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Plasmonic Dispersion Relations and Intensity Enhancement of Metal–Insulator–Metal Nanodisks

Author(s) -

Gernot Schaffernak,

Markus Krug,

Martin Belitsch,

Marija Gašparić,

Harald Ditlbacher,

Ulrich Hohenester,

Joachim R. Krenn,

Andreas Hohenau

Publication year - 2018

Publication title -

acs photonics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.735

H-Index - 89

ISSN - 2330-4022

DOI - 10.1021/acsphotonics.8b00938

Subject(s) - plasmon , materials science , metal insulator metal , metal , optoelectronics , insulator (electricity) , dispersion (optics) , surface plasmon , optics , physics , metallurgy , quantum mechanics , voltage , capacitor

We show that the plasmon modes of vertically stacked Ag-SiO 2 -Ag nanodisks can be understood and classified as hybridized surface and edge modes. We describe their universal dispersion relations and demonstrate that coupling-induced spectral shifts are significantly stronger for surface modes than for edge modes. The experimental data correspond well to numerical simulations. In addition, we estimate optical intensity enhancements of the stacked nanodisks in the range of 1000.

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