Surface plasmon polaritons in plasma-dielectric-magnetic plasma structure
Surface plasmon polaritons in plasma-dielectric-magnetic plasma structure
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DOI：
10.1088/2058-6272/ab9e5c
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发表时间：
2020-08
影响因子：
1.7
通讯作者：
Baojun Wang;Shun‐Hui Zhu;B. Guo
中科院分区：
文献类型：
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作者：
Baojun Wang;Shun‐Hui Zhu;B. Guo
从理论上研究了等离子体-介电-磁等离子体结构中激发的表面等离子体激元的性质。推导了横磁极化情况下SPP的正常色散关系和吸收色散关系。探讨了外磁场、等离子体碰撞频率、背景材料介电常数和厚度等因素对等离子体表面等离子体特性的影响。结果表明，这些因素极大地改变了SPPs的性质。结果表明，SPPs的位置和传播长度可以调整。此外，研究结果还表明，当外加磁场作用下，在低频区，表面等离子体的色散关系可以实现单向的。
The properties of surface plasmon polaritons (SPPs) excited in the plasma-dielectric-magnetic plasma structure are investigated theoretically. Both the normal and the absorbing dispersion relations of SPPs are derived and presented for transverse-magnetic polarization. The influences of the external magnetic field, collision frequency of plasma, background material dielectric constant, and thickness on the characteristics of SPPs are explored and discussed. Results show that these factors greatly alter the properties of SPPs. The results imply that the locations and propagation length of SPPs can be tuned. In addition, the results also show that a one-way dispersion relation of SPPs can be realized in the low-frequency regions when the external magnetic field is introduced.