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

被引：1

作者：

Huang, D. P. ^{[1
]}

Xu, K. Y. ^{[1
]}

机构：

[1] South China Normal Univ, Sch Phys & Telecommun Engn, Guangzhou 510006, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2021年 / 54卷 / 06期

基金：

中国国家自然科学基金;

关键词：

nonreciprocity; graphene; drifting electrons; surface plasmon polaritons; negative refraction; transfer-matrix methods; multilayered graphene-dielectric crystals; PLASMON POLARITONS; PHOTONICS; ISOLATORS;

D O I：

10.1088/1361-6463/abc19b

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页数：7