Gap plasmonics of silver nanocube dimers

Abstract

We theoretically investigate gap plasmons for two silver nanocubes coupled through a molecular tunnel junction. In absence of tunneling, the red-shift of the bonding mode saturates with decreasing gap distance. Tunneling at small gap distances leads to a damping and slight blue-shift of the bonding mode, but no low-energy charge transfer plasmon mode appears in the spectra. This finding is in stark contrast to recent work of Tan et al. [Science 343, 1496 (2014)].

5 pages, 4 figures

References in corpus (3)

• Simulating electron energy loss spectroscopy with the MNPBEM toolbox
• Plasmonics simulations with the MNPBEM toolbox: Consideration of substrates and layer structures
• Quantum corrected model for plasmonic nanoparticles: A boundary element method implementation

Cited by in corpus (3)

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