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Topological edge plasmon modes between diatomic chains of plasmonic nanoparticles

  • 发布时间:2020-05-16
  • 点击次数:
  • 发表刊物:Optics Express
  • 摘要:We study the topological edge plasmon modes between two “diatomic” chains of identical plasmonic nanoparticles. Zak phase for longitudinal plasmon modes in each chain is calculated analytically by solutions of macroscopic Maxwell’s equations for particles in quasi-static dipole approximation. This approximation provides a direct analogy with the Su-Schrieffer-Heeger model such that the eigenvalue is mapped to the frequency dependent inverse-polarizability of the nanoparticles. The edge state frequency is found to be the same as the single-particle resonance frequency, which is insensitive to …
  • 论文类型:期刊论文
  • 卷号:23
  • 期号:3
  • 页面范围:2021-2031
  • 是否译文:
  • 发表时间:2015

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