Surface waves with negative phase velocity supported by temperature-dependent hyperbolic materials

Abstract

A numerical investigation was undertaken to elucidate the propagation of electromagnetic surface waves guided by the planar interface of two temperature-sensitive materials. One partnering material was chosen to be isotropic and the other to be anisotropic. Both partnering materials were engineered composite materials, based on the temperature-sensitive semiconductor InSb. At low temperatures the anisotropic partnering material is a non-hyperbolic uniaxial material; as the temperature is raised this material becomes a hyperbolic uniaxial material. At low temperatures, a solitary Dyakonov wave propagates along any specific direction in a range of directions parallel to the planar interface. At high temperatures, up to three different surface waves can propagate in certain directions parallel to the planar interface; one of these surface waves propagates with negative phase velocity (NPV). At a fixed temperature, the range of directions for NPV propagation decreases uniformly in extent as the volume fraction of InSb in the isotropic partnering material decreases. At a fixed volume fraction of InSb in the isotropic partnering material, the angular range for NPV propagation varies substantially as the temperature varies.

References in corpus (7)

• Theory of surface plasmons and surface-plasmon polaritons
• Infrared hyperbolic metasurface based on nanostructured van der Waals materials
• Broadband super-Planckian thermal emission from hyperbolic metamaterials
• Resonant Metalenses for Breaking the Diffraction Barrier
• Semiconductor split-ring resonators for thermally tunable, terahertz metamaterials
• Spectral shifts in the properties of a periodic multilayered stack due to isotropic chiral layers
• Dyakonov-Tamm waves guided jointly by an ordinary, isotropic, homogeneous, dielectric material and a hyperbolic, dielectric, structurally chiral material

Cited by in corpus (3)

• Surface-plasmon-polariton wave propagation supported by anisotropic materials: multiple modes and mixed exponential and linear localization characteristics
• On Dyakonov-Voigt surface waves guided by the planar interface of dissipative materials
• Surface Bound States in the Continuum in Dyakonov Structures