Intrinsic nonreciprocal reflection and violation of Kirchhoff's law of radiation in planar type-I magnetic Weyl semimetal surfaces
Name
PhysRevB.102.165417.pdf
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988.84 KB
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Author(s)
Pajovic, Simo
Tsurimaki, Yoichiro
Qian, Xin
Chen, Gang
Date Issued
October 2020
Journal
Physical Review B
Publisher
American Physical Society (APS)
Citation
Pajovic, Simo et al. "Intrinsic nonreciprocal reflection and violation of Kirchhoff's law of radiation in planar type-I magnetic Weyl semimetal surfaces." Physical Review B 102, 16 (October 2020): 165417. © 2020 American Physical Society
Version
Final published version
Abstract
This work demonstrates that Kirchhoff's law of radiation, stating that the spectral directional emissivity and absorptivity of a surface are equal at thermal equilibrium, can be violated in planar surfaces without an external magnetic field or structures such as gratings. Modeling a type-I magnetic Weyl semimetal with an antisymmetric dielectric tensor, we show an intrinsic violation of Kirchhoff's law due to nonreciprocal surface polaritons induced by the Berry curvature and anomalous Hall velocity. This work provides a simple way to physically realize the violation of Kirchhoff's law.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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DOI of Published Version
https://doi.org/10.1103/physrevb.102.165417
