Back to Search Start Over

In-plane reflection phase engineering of graphene plasmons realized by electronic boundary design at the nanoscale

Authors :
Xiaojie Jiang
Weiwei Luo
Ni Zhang
Jiang Fan
Lei Wang
Yinxiao Xiang
Yao Lu
Zenghong Ma
Mengxin Ren
Xinzheng Zhang
Wei Cai
Jingjun Xu
Source :
AIP Advances, Vol 12, Iss 1, Pp 015108-015108-5 (2022)
Publication Year :
2022
Publisher :
AIP Publishing LLC, 2022.

Abstract

Understanding and controlling the reflection phase picked up by graphene plasmons (GPs) upon scattering at graphene boundaries is a prerequisite for designing the GP propagation and the resonance properties of GPs in nanostructures. However, an efficient method that could continuously change the reflection phase of GPs in a wide range is still lacking. Here, we demonstrate that the reflection phase of GPs can be effectively controlled by electronic boundary design. Specifically, a Fabry–Pérot (F–P) cavity is constructed by two electronic boundaries and then acts as an equivalent reflection boundary. Theoretical results show that the reflection phase of GPs could continuously vary in a wide range, almost 2π, by simply changing the graphene Fermi energy and the width of the F–P cavity. Furthermore, the evolution of GP modes is obtained in the simulated scattering-type scanning near-field optical microscopy experiment, which verifies the feasibility of the reflection phase control by employing our configuration. This work not only paves a way for in-plane plasmon control but also could serve as a valuable reference to various graphene-based plasmonic applications.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
21583226
Volume :
12
Issue :
1
Database :
Directory of Open Access Journals
Journal :
AIP Advances
Publication Type :
Academic Journal
Accession number :
edsdoj.8927c9e197447cf9f29e7c64cdd6d83
Document Type :
article
Full Text :
https://doi.org/10.1063/5.0081395