Meta-Driven Thermally Tunable Dyakonov Surface Waves at the Boundary of the Advanced Semiconductor Nanowire Metamaterials
摘要
The invention of constructed metamaterials has made it possible to create adjustable photonic devices that can manipulate the properties of surface waves referred as the surface plasmons. The incorporation of semiconductors into metamaterials is a tried-and-true method for producing thermally tunable metamaterials by controlling the density of semiconductor carriers at different temperatures. In order to study the propagation conditions of Dyakonov surface waves at terahertz (THz) frequencies, this work presents a theoretical approach that considers an interface made up of an isotropic dielectric material as a cover and an ellipsoidal nanowire metamaterial based on indium antimonide (InSb) anisotropic semiconductors as a substrate. In such a geometry, several temperature-dependent characteristics of Dyakonov surface waves are examined, such as permissible THz regions, dispersion relations, and those impacted by variations in the magnetic field. Because of the considerable birefringence present in the InSb nanowire metamaterial, the proposed structure has potential uses in THz sensing, imaging, and spectroscopy.