当前位置: X-MOL 学术J. Phys. D: Appl. Phys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Theory for polaritons in graphene photonic crystals in an applied magnetic field
Journal of Physics D: Applied Physics ( IF 3.1 ) Pub Date : 2020-01-17 , DOI: 10.1088/1361-6463/ab6518
M S Vasconcelos , M G Cottam

The dispersion relations for bulk and surface plasmon-polaritons in a semi-infinite 1D photonic crystal interlayered with graphene are calculated in the presence of an applied magnetic field. The results are applied to SiO 2 as the constituent material in geometry where the layers are arranged in a periodic array with the same layer thickness. The static magnetic field is applied perpendicular to the plane of layers. Numerical results are presented for the modes in THz range, up to 10 THz, to illustrate the important role of the applied magnetic field on the graphene sheets in modifying the polariton dispersion curves, especially for magnetic fields of the order of 1 T. It is found that the polariton frequencies and band gaps have a sensitive dependence on the electron scattering rate parameter (and hence the applied magnetic field strength) in the graphene sheets. Electromagnetic retardation effects are fully taken into account for the bulk bands, while for the surfac...

中文翻译:

磁场中石墨烯光子晶体的极化子理论

在存在磁场的情况下,计算了在夹有石墨烯的半无限一维光子晶体中体和表面等离振子-极化子的色散关系。将结果应用于作为几何结构的构成材料的SiO 2,其中各层以相同的层厚以周期性阵列排列。垂直于层平面施加静磁场。给出了高达10 THz的THz范围内模的数值结果,以说明在石墨烯片上施加的磁场在修改极化子色散曲线中的重要作用,特别是对于1 T量级的磁场。发现极化子频率和带隙对石墨烯片中的电子散射速率参数(以及因此施加的磁场强度)具有敏感的依赖性。整个频带都充分考虑了电磁延迟效应,而对于表面波带,则完全考虑了电磁延迟效应。
更新日期:2020-01-17
down
wechat
bug