Edge Mode Coupling within a Plasmonic Nanoparticle | Zendy

Franz Schmidt | Zendy; Harald Ditlbacher | Zendy; Andreas Hohenau | Zendy; Ulrich Hohenester | Zendy; Ferdinand Hofer | Zendy; Joachim R. Krenn | Zendy

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Edge Mode Coupling within a Plasmonic Nanoparticle

Author(s) -

Franz Schmidt,

Harald Ditlbacher,

Andreas Hohenau,

Ulrich Hohenester,

Ferdinand Hofer,

Joachim R. Krenn

Publication year - 2016

Publication title -

nano letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 4.853

H-Index - 488

eISSN - 1530-6992

pISSN - 1530-6984

DOI - 10.1021/acs.nanolett.6b02097

Subject(s) - antibonding molecular orbital , plasmon , molecular physics , materials science , coupling (piping) , electron energy loss spectroscopy , nanoparticle , optoelectronics , spectroscopy , enhanced data rates for gsm evolution , mode coupling , electron , plasmonic nanoparticles , spectral line , optics , chemical physics , nanotechnology , physics , transmission electron microscopy , atomic orbital , telecommunications , quantum mechanics , astronomy , computer science , metallurgy

The coupling of plasmonic nanoparticles can strongly modify their optical properties. Here, we show that the coupling of the edges within a single rectangular particle leads to mode splitting and the formation of bonding and antibonding edge modes. We are able to unambiguously designate the modes due to the high spatial resolution of electron microscopy-based electron energy loss spectroscopy and the comparison with numerical simulations. Our results provide simple guidelines for the interpretation and the design of plasmonic mode spectra.

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