Comparative study of Faraday rotation spectra of periodic and Fibonacci multilayer structures containing graphene sheets

In this paper, the transmission, Faraday rotation, and ellipticity spectra of the multilayered structures with the arrangement of the periodic and fifth-order Fibonacci sequence have been numerically studied in the THz frequency region. The building blocks of the structures are a graphene sheet on t...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2022-07, Vol.636, p.413835, Article 413835
Main Authors: Ghorbani-Oranj, Farshid, Abdi-Ghaleh, Reza, Roumi, Bita, Jamshidi-Ghaleh, Kazem, Madani, Amir, Zhou, Yuanguo
Format: Article
Language:English
Subjects:
Comparative studies
Ellipticity
Faraday effect
Faraday rotation
Fibonacci
Fibonacci numbers
Geometry
Graphene
Magnetic fields
Matrix methods
Multilayers
Nanocomposites
Periodic multilayer
Sequences
Sheets
Silicon carbide
Silicon dioxide
Spectra
Terahertz frequencies
Transfer matrices
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Summary:In this paper, the transmission, Faraday rotation, and ellipticity spectra of the multilayered structures with the arrangement of the periodic and fifth-order Fibonacci sequence have been numerically studied in the THz frequency region. The building blocks of the structures are a graphene sheet on the SiC layer (G-SiC), and a SiO2 layer. An external magnetic field is perpendicularly applied to the structures to induce the gyrotropic characteristics of the graphene sheets. The graphene sheets are considered as the thickness-less surfaces, and the 4 by 4 transfer matrix method has been utilized to study the mentioned spectra for TM and TE polarizations. The effects of incident angles have been investigated on the responses of the structures. The results revealed that the Fibonacci structure indicates a high Faraday rotation angle at around 11 THz. This property originates from the particular arrangement of the constituting layers of the Fibonacci structure. •Transmission, and Faraday rotation spectra of a periodic and a 5th-order Fibonacci multilayer structures are compared.•The structures are constituted of graphene on SiC, and SiO2 layers.•The considered structures have an equal number of constituting layers, but with different arrangements.•The effects of incident angle of TM and TE polarizations are investigated.•The results revealed the better performance of the Fibonacci structure.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2022.413835