二维电子气体对称波导中表面磁离激元极化子的传播

IF 1.6 3区 物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS
Mingxiang Gao, Baojun Wang, Bin Guo
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引用次数: 0

摘要

研究了由两个半无限高密度二维电子气体(2DEG)组成的以Voigt组态薄膜隔开的对称结构中的表面磁等离子体极化子(SMPPs)的性质。结合麦克斯韦方程和边界条件,导出了横向磁极化的常态色散关系和吸收色散关系。结果表明,外加磁场、2DEG的碰撞频率、介电常数和薄膜厚度对SMPPs的特性有较大影响,表明SMPPs的位置和传播长度是可以控制的。结果表明,物理几何的对称性保持了SMPPs色散关系的对称性。此外,发现随着外加磁场的增加,SMPPs的穿透深度减小,能量损失减小,这意味着等离子体激元可以传播更长的距离。此外,对称配置下的smpp寿命比非对称配置下的smpp寿命更长。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Propagation of surface magnetoplasmon polaritons in a symmetric waveguide with two-dimensional electron gas
Abstract The properties of surface magnetoplasmon polaritons (SMPPs) in a symmetric structure, composed of two semi-infinite regions of high-density two-dimensional electron gas (2DEG) separated by a thin film in Voigt configuration, are investigated. The normal and absorption dispersion relations for the transverse magnetic polarization are derived by correlating Maxwell’s equation and the boundary conditions. It is demonstrated that the features of SMPPs are greatly influenced by the external magnetic field, collision frequency of 2DEG, the dielectric constant, and the thickness of the thin film, suggesting that the locations and propagation lengths of SMPPs can be governed accordingly. It is shown that the symmetry of the physical geometry preserves the symmetry of the dispersion relations of SMPPs. Furthermore, it is discovered that as the external magnetic field increases, the penetration depth of SMPPs decreases, while their energy loss reduces, implying that plasmons can propagate for longer distances. Additionally, it is observed that SMPPs in the symmetric configuration have a longer lifetime than those in the asymmetric configuration.
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来源期刊
Plasma Science & Technology
Plasma Science & Technology 物理-物理:流体与等离子体
CiteScore
3.10
自引率
11.80%
发文量
3773
审稿时长
3.8 months
期刊介绍: PST assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. A Publication of the Institute of Plasma Physics, Chinese Academy of Sciences and the Chinese Society of Theoretical and Applied Mechanics.
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