Abstract
The surface plasmon polaritons (SPPs) propagating at the interface of graphene-covered metamaterial in terahertz range is investigated. The characteristic equation is derived by means of the equations of electromagnetic field and impedance boundary condition. Instead of adopting constant values for the parameters of the material, the lossy dispersion relations are used for obtaining these variable parameters. The numerical results show that it is possible to tune SPPs through changing the chemical potential of graphene. The propagation length can vary with the chemical potential of graphene, but the total energy flux is not sensitive to the chemical potential. And we made a simulation to validate the numerical results.
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This work was supported by the National Natural Science Foundation of China (Grant nos. 11874050 and 12075315).
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Wang, Y., Yu, Y., Chen, Z. et al. Active Control of Surface Plasmon Polaritons by Varying the Chemical Potential of Graphene in Graphene-Covered Metamaterial. Phys. Wave Phen. 30, 298–305 (2022). https://doi.org/10.3103/S1541308X22050119
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DOI: https://doi.org/10.3103/S1541308X22050119