具有反常霍尔电流的双各向同性介质中表面极化激元构型的多重性
Multiplicity of surface polariton configurations in bi-isotropic media with anomalous Hall current
查看机构详情
- Universidade Federal do Maranhão（马拉尼昂联邦大学）
机构由 AI 辅助整理，请以论文原文为准。
浏览论文内容
中文总结 AI 辅助
本研究探讨双各向同性介质与介电体界面上的表面极化激元，推导存在条件，发现传播长度随磁电参数出现局部极大值，并揭示反常霍尔效应导致多种传播构型及禁止传播区间。
中文摘要 AI 辅助
在这项工作中，我们研究了在无损耗情形以及存在小损耗情形下，简单介电体与双各向同性介质界面处产生的表面极化激元（SPs）。对于前者，当介电常数和磁电参数为正时，可以产生非佳科诺夫表面极化激元。我们推导出了介电常数和双各向同性参数的一般限制条件（存在条件）。对于后者，我们考虑了小损耗的影响，并讨论了特征表面等离子体激元极化激元长度。传播长度可以在磁电参数的特定值处表现出局部极大值，这是一种不寻常的新行为，可被视为这些手性表面极化激元的特征标志。我们还研究了涉及具有反常霍尔效应（AHE）的双各向同性介质的界面上的表面波。我们获得了其发生的多种构型，揭示了在参数空间中具有不同传播模式和共存性的更丰富场景。非零AHE贡献的存在产生了一个磁电范围，在该范围内表面波传播被禁止，这为具有AHE贡献的双各向同性介质中的表面极化激元传播提供了额外的特征标志。
英文摘要
In this work, we investigate surface polaritons (SPs) arising at the interface between a simple dielectric and a bi-isotropic medium, in the lossless regime and in the presence of small losses. For the former, non-Dyakonov surface polaritons can arise for positive permittivities and magnetoelectric parameters. General restrictions on the permittivities and bi-isotropic parameter (existence conditions) are derived. For the latter, the effect of small losses is considered, and the characteristic surface plasmon-polariton lengths are discussed. The propagation length can exhibit a local maximum for specific values of the magnetoelectric parameter, an unusual new behavior that can be regarded as a signature of these chiral surface polaritons. Surface waves in an interface involving a bi- isotropic medium with an anomalous Hall effect (AHE) are also examined. Multiple configurations for their occurrence are obtained, revealing a richer scenario with distinct regimes of propagation and coexistence in the parameter space. The presence of a non-null AHE contribution creates a magnetoelectric range for which the surface wave propagation is forbidden, providing an additional signature of surface-polariton propagation in bi-isotropic media with an AHE contribution.
