Polar magneto-optical Kerr effect of reflected light from Graphene/InAs/Graphene/Polyimide/Al structure

IF 3.3 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Superlattices and Microstructures Pub Date : 2021-10-01 DOI:10.1016/j.spmi.2021.107021

Bita Roumi, Reza Abdi-Ghaleh

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引用次数: 1

Abstract

In this paper, we have numerically investigated the magneto-optical (MO) properties, and figure of merit (FOM) behavior of the reflected light from a layered structure composed of two graphene sheets, an InAs, a Polyimide, and an Aluminum layers with the arrangement of Graphene/InAs/Graphene/Polyimide/Al at the terahertz frequency region. An external magnetic field is applied to the structure along with the light propagation direction to induce the gyrotropic properties of the graphene sheets and the InAs layer. The developed 4 by 4 transfer matrix method is used to study the MO responses including the intensity reflection coefficient, Kerr rotation, and ellipticity angles spectra of the structure. At first, we compared the MO responses of the structures in the presence and absence of two graphene sheets. The results demonstrated that the performance of the structure in the presence of graphene sheets is higher than in the case without graphene sheets. To continue, the effects of applied magnetic field strength, the charge carrier density of graphene, and the InAs layer thickness have been studied for the structure with graphene sheets. The results revealed that the performance of the structure would be controlled and tuned by the investigated parameters.

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石墨烯/InAs/石墨烯/聚酰亚胺/铝结构反射光的极性磁光克尔效应

在本文中，我们数值研究了由两个石墨烯片，一个InAs，一个聚酰亚胺和一个铝层组成的层状结构的磁光(MO)性质和优点数(FOM)行为，这些层状结构的石墨烯/InAs/石墨烯/聚酰亚胺/铝层在太赫兹频率区域的排列。在沿光传播方向的结构上施加外磁场，诱导石墨烯片和InAs层的回旋特性。采用建立的4 × 4传递矩阵法研究了MO响应，包括结构的强度反射系数、克尔旋转和椭圆角谱。首先，我们比较了两种石墨烯片存在和不存在时结构的MO响应。结果表明，在有石墨烯片的情况下，结构的性能比没有石墨烯片的情况下要高。接着，研究了外加磁场强度、石墨烯载流子密度和InAs层厚度对石墨烯片结构的影响。结果表明，所研究的参数可以控制和调节结构的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Superlattices and Microstructures 物理-物理：凝聚态物理

CiteScore

6.10

自引率

3.20%

发文量

审稿时长

2.8 months

期刊介绍： Superlattices and Microstructures has continued as Micro and Nanostructures. Micro and Nanostructures is a journal disseminating the science and technology of micro-structures and nano-structures in materials and their devices, including individual and collective use of semiconductors, metals and insulators for the exploitation of their unique properties. The journal hosts papers dealing with fundamental and applied experimental research as well as theoretical studies. Fields of interest, including emerging ones, cover: • Novel micro and nanostructures • Nanomaterials (nanowires, nanodots, 2D materials ) and devices • Synthetic heterostructures • Plasmonics • Micro and nano-defects in materials (semiconductor, metal and insulators) • Surfaces and interfaces of thin films In addition to Research Papers, the journal aims at publishing Topical Reviews providing insights into rapidly evolving or more mature fields. Written by leading researchers in their respective fields, those articles are commissioned by the Editorial Board. Formerly known as Superlattices and Microstructures, with a 2021 IF of 3.22 and 2021 CiteScore of 5.4