论文标题
中红石墨烯-HBN异质结构中的双曲线声子 - 平面模式用于中红外应用
Hyperbolic Phonon-Plasmon Modes in Grounded Graphene-hBN Heterostructures for Mid-Infrared Applications
论文作者
论文摘要
近年来，由于杂交结构的耦合特征，双曲线范德华异质结构与等离子二维纳米材料的杂交是THZ频率上有趣的研究领域之一。本文研究了接地的杂化石墨烯 - 甲状腺氮化硼（HBN）异质结构中可调节表面声子 - 平面极化子的传播。通过应用各个区域中电磁成分的边界条件来提出精确的分散关系，为提出的结构提供了一个分析模型。模拟结构，并在上部静息条带中报告结果。在模拟和分析结果之间可以看到一个良好的一致性，这表明了我们的数学关系的高精度。通过研究化学势对结构性能的影响，可以显示异质结构的可调性。报道以48.3 thz的频率报道了功绩的高值，即FOM = 190。介绍的研究可以为未来的纳米质量应用设计新颖的THZ设备开辟道路。
In recent years, the hybridization of hyperbolic van der Waals heterostructures with plasmonic two-dimensional nano-materials is one of the interesting research areas at THz frequencies due to the coupled features of the hybrid structure. This article investigates the propagation of tunable surface phonon-plasmon polaritons in grounded hybrid graphene-hexagonal Boron Nitride (hBN) heterostructures. An analytical model is presented for the proposed structure, by applying the boundary conditions for the electromagnetic components in the various regions, to derive an exact dispersion relation. The structure is simulated and the results are reported in the upper Reststrahlen band. A good agreement is seen between simulation and analytical results, which shows the high accuracy of our mathematical relations. The tunability of the heterostructures is shown by studying the effect of chemical potential on the performance of the structure. A high value of the figure of merit, i.e. FOM=190, is reported at the frequency of 48.3 THz. The presented study can open the way for the design of novel THz devices for future nano-plasmonic applications.
