Giant enhancement of Faraday rotation in Weyl semimetal assisted by optical Tamm state

Li, Tianming; Yin, Chang; Wu, Feng

doi:10.1016/j.physleta.2022.128103

Cited by 13 publications

(2 citation statements)

References 70 publications

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“…[ 23 ] Thus, I choose a standard value in between, i.e.,

\left(\epsilon\right)_{d} = 1.5

, which could represent both the Weyl semimetal and the magneto‐optical material. [ 5,24 ] As a result, this work describes nonreciprocal materials in the general sense. Discussions related to different permittivity tensor element values can be found in Section S6, Supporting Information.…”

Section: Theoretical Modelmentioning

confidence: 99%

Nonreciprocal Electromagnetic Wave Manipulation via a Single Reflection

Wang

2023

Advanced Photonics Research

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Electromagnetic field manipulation plays a key role in applications such as electron acceleration, nonlinear light–matter interaction, and radiation engineering. Nonreciprocal materials, such as Weyl semimetals, enable the manipulation of the electromagnetic field in a full photonic manner, owing to their intrinsic time‐reversal symmetry breaking, leading to asymmetric material response for photons with and momenta. Herein, the results suggest that a simple planar interface between semi‐infinite air and a nonreciprocal material can achieve spatiotemporal manipulation of the electromagnetic field. In particular, this work presents three compelling scenarios for electromagnetic wave manipulation: radiation pattern redistribution (with closed‐form expressions provided), carrier‐envelope‐phase control, and spatial profile control. The presented results pave the way for electromagnetic field manipulation using pattern‐free nonreciprocal materials.

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“…[ 23 ] Thus, I choose a standard value in between, i.e.,

\left(\epsilon\right)_{d} = 1.5

Section: Theoretical Modelmentioning

confidence: 99%

Nonreciprocal Electromagnetic Wave Manipulation via a Single Reflection

Wang

2023

Advanced Photonics Research

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“…Topological semimetals exhibit a plethora of intriguing optical phenomena due to their unique band topology in the presence as well as in absence of external fields [17,[25][26][27][28][29][30][31][32][33][34][35][36][37]. The electrodynamic response of a WSM with broken time-reversal symmetry (TRS) has been a prime topic of interest to both theorists and experimentalists due to its connection to the axion field, which modifies the Maxwell's equations [38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Theoretical investigations on Kerr and Faraday rotations in topological multi-Weyl Semimetals

Ghosh,

Sahoo,

Nandy

2023

SciPost Phys.

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Motivated by the recent proposal of giant Kerr rotation in WSMs, we investigate the Kerr and Faraday rotations in time-reversal broken multi-Weyl semimetals (mWSMs) in the absence of an external magnetic field. Using the framework of Kubo response theory, we find that both the longitudinal and transverse components of the optical conductivity in mWSMs are modified by the topological charge (nn). Engendered by the optical Hall conductivity, we show in the thin film limit that, while the giant Kerr rotation and corresponding ellipticity are independent of nn, the Faraday rotation and its ellipticity angle scale as nn and n^2n2, respectively. In contrast, the polarization rotation in semi-infinite mWSMs is dominated by the axion field showing nn dependence. In particular, the magnitude of Kerr (Faraday) angle decreases (increases) with increasing nn in Faraday geometry, whereas in Voigt geometry, it depicts different nn-dependencies in different frequency regimes. The obtained results on the behavior of polarization rotations in mWSMs could be used in experiments as a probe to distinguish single, double, and triple WSMs, as well as discriminate the surfaces of mWSMs with and without hosting Fermi arcs.

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Strong nonreciprocal thermal radiation in Weyl semimetal-dielectric multilayer structure

Wang

et al. 2022

International Journal of Thermal Sciences

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Giant enhancement of Faraday rotation in Weyl semimetal assisted by optical Tamm state

Cited by 13 publications

References 70 publications

Nonreciprocal Electromagnetic Wave Manipulation via a Single Reflection

Nonreciprocal Electromagnetic Wave Manipulation via a Single Reflection

Theoretical investigations on Kerr and Faraday rotations in topological multi-Weyl Semimetals

Strong nonreciprocal thermal radiation in Weyl semimetal-dielectric multilayer structure

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