Nonlocal study of ultimate plasmon hybridization

Abstract

Within our recently proposed generalized nonlocal optical response (GNOR) model, we revisit the fundamental problem of an optically excited plasmonic dimer. The dimer consists of two identical cylinders separated by a nanometre-sized gap. We consider the transition from separated dimers via touching dimers to finally overlapping dimers. In particular, we focus on the touching case, showing a fundamental limit on the hybridization of the bonding plasmon modes due to nonlocality. Using transformation optics we determine a simple analytical equation for the resonance energies of the bonding plasmon modes of the touching dimer.

References in corpus (8)

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• Generalized nonlocal optical response in nanoplasmonics
• Modified field enhancement in plasmonic nanowire dimers due to nonlocal response
• Surface Plasmons and Nonlocality: a Simple Model
• Blueshift of the surface plasmon resonance in silver nanoparticles: substrate effects
• Nonlocal response in plasmonic waveguiding with extreme light confinement
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Cited by in corpus (11)

• Nonlocal optical response in metallic nanostructures
• Projected-Dipole Model for Quantum Plasmonics
• Extremely confined gap plasmon modes: when nonlocality matters
• How nonlocal damping reduces plasmon-enhanced fluorescence in ultranarrow gaps
• A hybridizable discontinuous Galerkin method for solving nonlocal optical response models
• Robustness of the Rabi splitting under nonlocal corrections in plexcitonics
• Role of diffusive surface scattering in nonlocal plasmonics
• Robustness of the far-field response of nonlocal plasmonic ensembles
• Surface-plasmon resonances of arbitrarily shaped nanometallic structures in the small-screening-length limit
• Asymptotics of surface-plasmon redshift saturation at sub-nanometric separations
• Quantum-hydrodynamic modal perspective on plasmonic gap structures