- Letter
- Open Access
Maximal violation of Kirchhoff's law in planar heterostructures
Phys. Rev. Research 5, L022051 – Published 7 June, 2023
DOI: https://doi.org/10.1103/PhysRevResearch.5.L022051
Abstract
Violating Kirchhoff's law is generally achieved using patterned nonreciprocal materials, where a guided or polaritonic mode that lies outside the light cone, often via gratings, is excited. 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.
Physics Subject Headings (PhySH)
Article Text
Supplemental Material
References (41)
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