Plasmon excitation in MoS2/graphene van der waals heterostructures

被引：0

作者：

Liu, Dan-Dan ^{[1
]}

Zhang, Zhi-Yin ^{[2
]}

Guo, Peng ^{[1
]}

Wang, Jian-Jun ^{[1
]}

机构：

[1] Zhongyuan Univ Technol, Coll Sci, Zhengzhou 450007, Peoples R China

[2] ZhengZhou Shengda Univ Econ Business & Management, Inst Appl Math, Zhengzhou 451191, Peoples R China

来源：

PRAMANA-JOURNAL OF PHYSICS | 2021年 / 96卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Plasmon resonances; Van der Waals heterostructures; transition metal dichalcogenides; 73; 20; Mf; 21; -b; GRAPHENE; ELECTRONICS; TRANSPORT;

D O I：

10.1007/s12043-021-02258-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have carried out a study of collective excitations for MoS2/graphene van der Waals heterostructures (vdWHs) using time-dependent density function theory (TDDFT). The resonance absorption spectra of the structures were analysed to determine the polarisation direction in the X-, Y- and Z-axes. We found that the resonance intensities in MoS2/graphene structures were larger than the bilayer graphene structures in high-energy resonance, and the resonance peak of the graphene/MoS2/graphene heterostructure almost annihilated at the low-energy resonance band became broadened at the high-energy resonance band. We studied Fourier-induced charge density of MoS2/graphene structures and found that they have dipole-like characteristics in the low-energy region.

引用

页数：9

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