Current-induced nonreciprocity and refraction-suppressed propagation in a multilayered graphene-dielectric crystal

Huang D. P.; Xu K. Y.

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Current-induced nonreciprocity and refraction-suppressed propagation in a multilayered graphene-dielectric crystal

机译：多层石墨烯 - 介质晶体中的电流诱导的非加权和折射抑制传播

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Nonreciprocal photonic devices play a significant role in regulating the propagation of electromagnetic waves. Here we theoretically investigate the nonreciprocal properties of transverse magnetic modes in a multilayered graphene-dielectric crystal under an applied DC bias. We find that drifting electrons driven by the external DC electric field can give rise to extremely asymmetric dispersion diagrams. Furthermore, when the drifting electrons travel antiparallel to the normal component of the incident wave vector, negative refraction can be strongly suppressed, causing the energy of light to flow along the direction of the electric current. Our theoretical findings can be used to design nonreciprocal optoelectronic devices and enable light to propagate without refraction.

机译：非互易光子器件在调节电磁波传播方面发挥着重要作用。本文从理论上研究了在外加直流偏压下多层石墨烯介电晶体中横向磁模的非互易性质。我们发现，由外部直流电场驱动的漂移电子可以产生非常不对称的色散图。此外，当漂移的电子与入射波矢量的法向分量反平行时，负折射会被强烈抑制，导致光能沿电流方向流动。我们的理论结果可用于设计非互易光电子器件，并使光在无折射的情况下传播。

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来源
《Journal of Physics, D. Applied Physics: A Europhysics Journal》 |2021年第6期|共7页
作者
Huang D. P.; Xu K. Y.;
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作者单位

South China Normal Univ Sch Phys &

Telecommun Engn Guangzhou 510006 Peoples R China;

South China Normal Univ Sch Phys &

Telecommun Engn Guangzhou 510006 Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类应用物理学;
关键词
nonreciprocity; graphene; drifting electrons; surface plasmon polaritons; negative refraction; transfer-matrix methods; multilayered graphene-dielectric crystals;

机译：非防洪;石墨烯;漂移的电子;表面等离子体Polaritons;负折射;转移 - 矩阵方法;多层石墨烯 - 介电晶体;

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11. Current-induced nonreciprocity and refraction-suppressed propagation in a multilayered graphene-dielectric crystal [O] . D P Huang, K Y Xu 2020

机译：多层石墨介质晶体中的电流诱导的非漏极和折射抑制传播
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Current-induced nonreciprocity and refraction-suppressed propagation in a multilayered graphene-dielectric crystal

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