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Characteristics of Quantum Plasmonic Waves Guided by a Symmetric Metal–Gap–Dielectric Nano-system

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Abstract

The guiding properties of a symmetric conductor–gap–dielectric system consists of a metal film symmetrically surrounded by media of two dielectrics, and is theoretically analyzed by using the quantum hydrodynamic model and Maxwell’s equations. We found that the quantum effects, including the Fermi pressure and the Bohm potential, facilitate the propagation of the hybrid surface waves at higher values of the wavenumber. The results show that the permittivity of the surrounding dielectric mediums and the geometric effects (namely, the thickness of the metal film and gap layers) significantly modify the basic behaviors of the hybrid surface waves. Our results provide a good understanding of the basic features of the wave propagation phenomenon in hybrid waveguide systems.

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All required data are included in the manuscript.

Code Availability

The numerical analysis is done with Matlab software -version R2015b.

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Authors and Affiliations

  1. Department of Physics, Faculty of Science, Arak University, 38156-8 8349, Arak, Iran

    Mahboubeh Mahmoudi Moghadam & Mehran Shahmansouri

Authors
  1. Mahboubeh Mahmoudi Moghadam
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  2. Mehran Shahmansouri
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Contributions

Mehran Shahmansouri proposed the concept and supervised the physical interpretations. Mahboubeh Mahmodi Moghadam performed the calculations and analyzed the numerical data. Both the authors have discussed the results thoroughly and contributed to the writing and review of the manuscript.

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Correspondence to Mahboubeh Mahmoudi Moghadam.

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Moghadam, M.M., Shahmansouri, M. Characteristics of Quantum Plasmonic Waves Guided by a Symmetric Metal–Gap–Dielectric Nano-system. Plasmonics 16, 1349–1355 (2021). https://doi.org/10.1007/s11468-021-01401-0

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