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The crystal field plasmon splitting

AuthorsMezzasalma, Stefano Antonio; Grzelczak, Marek; Sancho-Parramon, Jordi
Issue Date2020
PublisherAmerican Chemical Society
CitationACS Photonics 7(6): 1551–1559 (2020)
AbstractWe present an electromagnetic analogue of crystal (or ligand) field theory that describes geometric eigenmodes and the resonant plasmon wavelength in plasmonic nanocrystals in terms of a simple shape descriptor. Our model, crystal field plasmon splitting, is based on secular equations for geometric eigenmodes, allowing for the separation of pure shape from materials effects. As an example, the model is implemented to the experimental gold nanoparticles that undergo cube-to-sphere transition, showing that geometric eigenvalues change correspondingly in analogy to the atomic energy levels in Tanabe–Sugano correlation diagrams.
Publisher version (URL)https://doi.org/10.1021/acsphotonics.0c00381
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