Mapping nanoscale electric field hotspots of a plasmon-molecule system:
a theoretical study
The coherent interaction between localized surface plasmon resonance
modes and excitons of a single or a collection of quantum emitters have
fueled the development of novel applications in quantum optics and
material science. In this work, using first-principles simulations, we
analyse the modifications in absorption spectra and electric near-field
enhancements in a structure consisting of an aluminum nanotriangle
interacting with a varying number of pyridine molecules (placed at the
nanotriangle tips) in close proximity. What’s more, we find very
interesting spatial variation in induced electron density and electric
near-field enhancements with a remarkable dependence on the number of
interacting pyridine molecules and the direction of light illumination.
Our results may help to improve our understanding of the light-matter
interaction at the sub-nanometer scale.