边缘模式与衬底声子的杂化
Hybridization of edge modes with substrate phonons
AI总结：
本文利用Wiener-Hopf解析方法研究二维材料边缘模式与衬底声子的杂化，预测其在太赫兹和远红外波段的色散、衰减与约束特性。
摘要：
在二维（2D）材料上传播的表面等离激元或声子可以与其衬底中的共振激发发生耦合，由此产生的耦合模式已被广泛研究。沿二维材料边界传播的边缘模式与衬底激发之间的类似耦合尚未被探索。本文旨在通过使用精确的Wiener-Hopf解析方法研究边缘-衬底杂化模式来填补这一空白。我们分析了此类杂化模式在无磁场（等离激元-声子和声子-声子杂化模式）以及在量子化磁场中边缘磁等离激元与衬底声子杂化情况下的色散、衰减率和约束性。对于准二维材料（单层和双层石墨烯、量子阱、薄膜半导体）与具有极性声子共振的衬底的若干组合，预测这些杂化模式出现在太赫兹和远红外波段。
英文摘要：
Surface plasmons or phonons propagating on a two-dimensional (2D) material can exhibit coupling with resonant excitations in its substrate, and the resulting coupled modes were extensively studied. Similar coupling of edge modes propagating along a boundary of 2D material with the substrate excitations remains unexplored. This paper aims to bridge this gap by investigating the edge-substrate hybrid modes using the exact Wiener-Hopf analytical approach. We analyze dispersions, decay rate, and confinement of such hybrid modes both without magnetic field (plasmon-phonon and phonon-phonon hybrid modes) and in quantizing magnetic field where edge magnetoplasmons hybridize with substrate phonons. The hybrid modes are predicted to occur in THz and far-IR ranges for several combinations of quasi-2D materials (single- and bilayer graphene, quantum wells, thin-film semiconductors) and substrates with polar-phonon resonances.
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