Strong nonreciprocal thermal radiation of transverse electric wave in Weyl semimetal

Wu, Jize; Wu, Biyuan; Shi, Kezhang; Wu, Xiaohu; Fu, Ceji

doi:10.1016/j.ijthermalsci.2023.108172

Cited by 37 publications

(4 citation statements)

References 54 publications

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“…NLP of WSM thin film sitting on the metal substrate has been demonstrated, which is resulting from the Fabry-Perot (FP) resonances [38]. When α-MoO 3 /SiC hybrid layer is introduced on the top of the WSM layer, both the hybrid polaritons and FP modes influence the whole optical responses.…”

Section: Effect Of Geometrical Parameters On Nlpmentioning

confidence: 99%

“…Besides, there is a FR related with the negative part of δ spectra, providing further degree for the manipulation of NLP. The azimuthal angle (ϕ) performs the function of an index of polarization orientation, which as a consequence could lead to modification of the peak value of δ [38,62]. To explore the impact of ϕ, δ spectra versus λ and ϕ is simulated and shown in figure 5, where d 1 = d 2 = 0.1 µm and t = 0.25 µm.…”

Section: Tunable Nlp With Incidence and Azimuthal Anglesmentioning

confidence: 99%

“…To alleviate the requirement of strong magnetic fields, magnet-free NRMs are extremely appreciated for new strategy to accomplish the strong nonreciprocity without any external stimulus [32,33]. Quite recently, Weyl semimetals (WSMs) have drawn much attention to improve the nonreciprocal properties [34][35][36][37][38]. It is also should be pointed out that complex nano-patterning or multilayer deposition methods need to be employed to achieve previously mentioned goals that are very difficult to implement in practice [39][40][41][42][43], especially the WSM is still immature in term of fabrication.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Wide-angle and Fano-shape contrast between emission and absorption in hybrid polariton-involved planar structure

Qian,

Xu,

et al. 2024

J. Opt.

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Nonreciprocal light propagation (NLP) in planar structure has become a hot topic because of the pattern-free fabrication process and the potentials for exploring heat transfer and energy management. An effective strategy incorporated with natural van der Waals (vdW) material (α-phase molybdenum trioxide, α-MoO3}), ultra-thin polar crystal (slicon carbide, SiC) thin film and a Weyl semimetal (WSM) interlayer sitting on a metal (silver, Ag) substrate is proposed. The emission and absorption of the suggested device is explored with electromagnetic (EM) simulations that utilizethe 4×4 transfer matrix method (TMM). Angular-resolved emission shows that the Fano-shape of nonreciprocity can be maintained within wide angle range. Tunable Fano resonances (FRs) with different line shapes are demonstrated by varying the structural parameters. Moreover, the enhanced nonreciprocal radiation effect can be observed for both s- and p-polarized incidence waves. The proposal allows simultaneous control of spectral distribution and polarization of radiation, which will facilitate the active design and aplication of mid-infrared (MIR) emitters.Angular-resolved emission shows that the Fano-shape of nonreciprocity can be maintained within wide angle range. Tunable Fano resonances (FRs) with different line shapes are demonstrated by varying the structural parameters. Moreover, the enhanced nonreciprocal radiation effect can be observed for both s- and p-polarized incidence waves. The proposal allows simultaneous control of spectral distribution and polarization of radiation, which will facilitate the active design and aplication of mid-infrared (MIR) emitters.

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Section: Effect Of Geometrical Parameters On Nlpmentioning

confidence: 99%

Section: Tunable Nlp With Incidence and Azimuthal Anglesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Wide-angle and Fano-shape contrast between emission and absorption in hybrid polariton-involved planar structure

Qian,

Xu,

et al. 2024

J. Opt.

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show abstract

“…The azimuthal performs the function of an index of polarization orientation, which as a consequence could lead to modification of the peak value of Z. 62,63 To explore the impact of azimuthal angle f, we have performed infrared nonreciprocity calculation when the TM-polarized wave is incident at a fixed angle of y = 301. The a, e and Z spectra for a 3601 rotation of f are given in Fig.…”

Section: Influence Of Structural Parameters On Nonreciprocal Radiationmentioning

confidence: 99%

Weyl semimetal mediated epsilon-near-zero hybrid polaritons and the induced nonreciprocal radiation

Xu,

Qian,

Sun

et al. 2023

Phys. Chem. Chem. Phys.

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Nonreciprocity of thermal radiation in attenuated total reflection‐mediated optical waveguide

Cui,

Gu,

Zheng

2024

Micro & Optical Tech Letters

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Fano resonance (FR) and the triggered nonreciprocal thermal radiation (NTR) in a Weyl semimetal (WSM)‐ incorporated Kretschmann configuration has been observed and analyzed. Employing the anisotropic permittivity tensor, the electromagnetic responses of the proposed layered structure have been studied, and we illustrate that FR and strong nonreciprocity is attributed to the coupling between the planar waveguide mode and surface plasmon polaritons in WSM. It is shown that absorptivity (α) is not consistent with emissivity (e) in the considered angular range, which confirms near‐complete violation of Kirchhoff's law with nonmagnetic WSM. To analyze the physical origin of NTR, we performed numerical calculations for the α, e, nonreciprocity (η), as well as the magnetic field inside each layer. The compre‐hensive investigation of η with regard to geometric parameters suggests great potential for the practical use of perfect absorption and NTR over a wide range of frequencies and layer thicknesses.

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Strong nonreciprocal thermal radiation of transverse electric wave in Weyl semimetal

Cited by 37 publications

References 54 publications

Wide-angle and Fano-shape contrast between emission and absorption in hybrid polariton-involved planar structure

Wide-angle and Fano-shape contrast between emission and absorption in hybrid polariton-involved planar structure

Weyl semimetal mediated epsilon-near-zero hybrid polaritons and the induced nonreciprocal radiation

Nonreciprocity of thermal radiation in attenuated total reflection‐mediated optical waveguide

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