Electron exchange effect on surface magnetoplasmon polaritons dynamics in a graphene-plasmonic structure
Electron exchange effect on surface magnetoplasmon polaritons dynamics in a graphene-plasmonic structure
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DOI：
10.1063/5.0144913
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发表时间：
2023-04
影响因子：
3.2
通讯作者：
I. S. Eid;B. F. Mohamed;Bin Guo
中科院分区：
文献类型：
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作者：
I. S. Eid;B. F. Mohamed;Bin Guo
利用二维线性化磁量子流体力学模型和麦克斯韦方程组，研究了石墨烯-等离子体垂直结构中，两个半无限电介质直接覆盖在石墨烯片上，电子交换对表面磁等离子体极化子色散谱的影响。此外，在存在电子交换效应的情况下，研究了石墨烯表面磁等离子激元（GSMPPs）在经典和量子状态下对色散特性的其他影响（包括石墨烯电子密度、介电介质的介电常数和外部磁场）。我们的研究结果表明，这些影响极大地影响了GSMPPs的动力学。同时发现，在电子交换效应的作用下，GSMPPs在经典态下的传播速度和色散谱位移比在量子态下的传播速度和色散谱位移大大增加。我们的研究结果表明，电子交换效应在石墨烯纳米光学和等离子体器件中SMPPs的动力学行为调制中起着至关重要的作用。
By employing a two-dimensional linearized magnetoquantum hydrodynamic model and Maxwell’s equations, the electron exchange effect on the dispersion spectrum of surface magneto-plasmon polaritons (SMPPs) is studied in a perpendicular configurated graphene-plasmonic structure where a graphene sheet is directly covered by two semi-infinite dielectrics. Besides, other influences (including the graphene electron density, the dielectric constant of the dielectric medium, and the external magnetic field) on dispersion characteristics in both classical and quantum regimes of graphene surface magneto plasmon polaritons (GSMPPs) have been investigated in the presence of an electron exchange effect. Our results show that these influences greatly affect the dynamics of GSMPPs. Also, it is found that in the presence of the electron exchange effect, the propagation speed and the dispersion spectrum shift of GSMPPs in the classical regime are largely increased more than those in the case of the quantum regime. Our findings demonstrate that the electron exchange effect has a vital function in the modulation of the dynamical behavior of SMPPs in graphene-nano optical and plasmonic devices.