Surface plasmons on a doped graphene sheet with periodically modulated conductivity

被引：12

作者：

Ben Rhouma, M. ^{[1
]}

Oueslati, M. ^{[1
]}

Guizal, B. ^{[2
]}

机构：

[1] Univ Tunis El Manar, Fac Sci Tunis, Unite Nanomat & Photon, El Manar 2092, Tunisia

[2] Univ Montpellier, Lab Charles Coulomb, UMR 5221, CNRS, Pl Bataillon, F-34095 Montpellier, France

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2016年 / 96卷

关键词：

Graphene; Surface plasmon polariton; Diffraction gratings; METAL GRATINGS; METAMATERIALS; FREQUENCIES; MONOLAYER; WAVE;

D O I：

10.1016/j.spmi.2016.05.021

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We propose a model taking into account the periodic spatial modulation of a doped graphene sheet conductivity when it is placed in the vicinity of a dielectric grating. We then compute the absorption and study the excitation of surface plasmons on such a structure. We show that it is possible to excite surface modes leading to very high absorption. Our findings could be of interest in the design of graphene-based plasmonic devices and sensors working in the infra-red and the terahertz regions of the electromagnetic spectrum. (C) 2016 Elsevier Ltd. All rights reserved.

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页码：212 / 219

页数：8

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