Infra-Red Active Dirac Plasmon Serie in Potassium Doped-Graphene (KC8) Nanoribbons Array on Al2O3 Substrate

Autor: Vito Despoja, Julio C. Chacón-Torres, Josip Jakovac, Leonardo Marušić, Denise Andrade-Guevara
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Technology
Materials science
Dirac (software)
MathematicsofComputing_GENERAL
photonics
Physics::Optics
02 engineering and technology
Dielectric
01 natural sciences
Article
law.invention
intercalated graphene
Condensed Matter::Materials Science
law
0103 physical sciences
Physics::Atomic and Molecular Clusters
General Materials Science
2D plasmons
graphene ribbons
Physics::Chemical Physics
010306 general physics
Electronic band structure
Absorption (electromagnetic radiation)
Plasmon
Microscopy
QC120-168.85
Condensed matter physics
Graphene
QH201-278.5
Engineering (General). Civil engineering (General)
021001 nanoscience & nanotechnology
TK1-9971
Brillouin zone
TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES
Descriptive and experimental mechanics
Electrical engineering. Electronics. Nuclear engineering
TA1-2040
0210 nano-technology
Graphene nanoribbons
Zdroj: Materials
Volume 14
Issue 15
Materials, Vol 14, Iss 4256, p 4256 (2021)
ISSN: 1996-1944
Popis: A theoretical formulation of the electromagnetic response in graphene ribbons on dielectric substrate is derived in the framework of the ab initio method. The formulation is applied to calculate the electromagnetic energy absorption in an array of potassium-doped graphene nanoribbons (KC8-NR) deposited on a dielectric Al2O3 substrate. It is demonstrated that the replacement of the flat KC8 by an array of KC8-NR transforms the Drude tail in the absorption spectra into a series of infrared-active Dirac plasmon resonances. It is also shown that the series of Dirac plasmon resonances, when unfolded across the extended Brillouin zones, resembles the Dirac plasmon. The Dirac plasmon resonances’ band structure, within the first Brillouin zone, is calculated. Finally, an excellent agreement between the theoretical absorption and recent experimental results for differential transmission through graphene on an SiO2/Si surface is presented. The theoretically predicted micrometer graphene nanoribbons intercalation compound (GNRIC) in a stage-I-like KC8 is confirmed to be synthesized for Dirac plasmon resonances.
Databáze: OpenAIRE
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