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