# Crossing and anti-crossing effects of polaritons in a magnetic-semiconductor superlattice influenced by an external magnetic field

## TL;DR

This paper investigates how external magnetic fields influence the crossing and anti-crossing behaviors of bulk and surface polaritons in a magnetic-semiconductor superlattice, revealing critical points in their dispersion characteristics.

## Contribution

It introduces a detailed analysis of polariton dispersion in magnetic-semiconductor superlattices under magnetic fields, highlighting the crossing and anti-crossing phenomena and their critical points.

## Key findings

- Identification of crossing and anti-crossing effects in polariton dispersion
- Classification of bulk polaritons as elliptically polarized eigenwaves
- Revelation of dispersion distinctions involving critical points

## Abstract

Crossing and anti-crossing effects in dispersion characteristics of both bulk and surface polaritons in a magnetic-semiconductor superlattice influenced by an external static magnetic field being in the Faraday geometry are discussed. The bulk polaritons are classified as eigenwaves with right-handed and left-handed elliptically polarized states, whereas the surface polaritons are considered as hybrid modes having a predominant effect of either magnetic or semiconductor subsystem, and distinctions in dispersion characteristics of such polaritons are revealed involving the concept of critical points.