The 2021 magnetic hyperbolic polaritons roadmap

Abstract This roadmap provides viewpoints on some of the key developments in the field of magnetic hyperbolic polaritons as well as discusses some of the crucial challenges in this emerging field. In particular, it discusses routes for optimising electromagnetic behavior in natural magnetic materials, how artificial structures can be used to design novel phenomena, and how two-dimensional materials can provide a completely new avenue to explore hyperbolic behavior.