Dispersion regions overlapping for bulk and surface polaritons in a magnetic-semiconductor superlattice

TL;DR

This paper explores how to achieve overlapping dispersion regions for bulk and surface polaritons in a magnetic-semiconductor superlattice under an external magnetic field, enabling simultaneous existence of both polariton types.

Contribution

It demonstrates conditions for overlapping dispersion regions of bulk and surface polaritons in a stratified magnetic-semiconductor structure, guiding material parameter selection.

Findings

Overlapping dispersion regions can be achieved with proper parameter choices.

Conditions for simultaneous bulk and surface polariton existence are identified.

The study provides a basis for designing devices utilizing both polariton types.

Abstract

Extraordinary dispersion features of both bulk and surface polaritons in a finely-stratified magnetic-semiconductor structure which is under an action of an external static magnetic field in the Voigt geometry are discussed in this letter. It is shown that the conditions for total overlapping dispersion regions of simultaneous existence of bulk and surface polaritons can be reached providing a conscious choice of the constitutive parameters and material fractions for both magnetic and semiconductor subsystems.