Maximal Violation of Kirchhoff's Law in Planar Heterostructures
Optics
2023-02-21 v1 Applied Physics
Abstract
Violating Kirchhoff's law has so far required nonreciprocal materials patterned in microstructures. In these configurations, the excitation of a guided or polaritonic mode that lies outside the light cone, often via gratings, was a requirement. Here, we describe how nonreciprocity manifests itself in pattern-free heterostructures. We demonstrate that a resonant mode in a dielectric spacer separating a nonreciprocal film from a back-reflector suffices to maximally violate Kirchhoff's law, and identify the minimal dielectric requirements for such functionality, which are satisfied by currently available materials.
Keywords
Cite
@article{arxiv.2302.09373,
title = {Maximal Violation of Kirchhoff's Law in Planar Heterostructures},
author = {Lu Wang and F. Javier García de Abajo and Georgia T. Papadakis},
journal= {arXiv preprint arXiv:2302.09373},
year = {2023}
}