SURFACE PLASMON-POLARITONS AND TRANSVERSE SPIN ANGULAR MOMENTUM ON THE BOUNDARY OF THE HYPERBOLIC METAMATERIAL WITH AN ARBITRARILY ORIENTED OPTICAL AXIS

Abstract

The features of plasmon-polaritons (PPs) exited on the boundary of dielectric and a hyperbolic metamaterial are investigated for the case when the optical axis is oriented at an angle to the interface. It is shown that the PP phase velocity in the metamaterial is directed under a certain angle towards the boundary. The possibility is established and the conditions are found for localization of the plasmon-polaritons near the boundaries of the hyperbolic metamaterials of both I and II types. It is grounded that the surface PP localized near the isotropic dielectric-hyperbolic metamaterial boundary has the transverse spin moment whose magnitude depends on the wavelength of the exiting radiation, the orientation of the optical axis of the hyperbolic metamaterial, and the dielectric properties of the boundary media.