Enhanced and tunable Faraday effects in borophene metasurface bilayers

Min Cheng ()
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Min Cheng: Minjiang University

The European Physical Journal B: Condensed Matter and Complex Systems, 2023, vol. 96, issue 10, 1-6

Abstract: Abstract The Faraday rotation (FR) effect for transverse-magnetic (p)-polarized wave in the borophene metasurface bilayers (BMB) is studied theoretically. Under the influence of the multiple interference mechanism for the bilayer structure, it is found that there exists large FR angle in the BMB near the topological transition (TPT) point for borophene metasurface, which is caused by the proximity of the amplitude values of the co-polarized transmission coefficient $$\left|{{\varvec{t}}}_{{\varvec{p}}{\varvec{p}}}\right|$$ t p p and cross-polarized transmission coefficient $$\left|{{\varvec{t}}}_{{\varvec{p}}{\varvec{s}}}\right|$$ t p s to each other. It is demonstrated that in BMB, there exists the ultrahigh sensitivity of the FR angle to spacer refractive index. Graphical abstract

Date: 2023
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DOI: 10.1140/epjb/s10051-023-00606-y

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