Calibration of Fermi Velocity to Explore the Plasmonic Character of Graphene Nanoribbon Arrays by a Semi-Analytical Model
We present an analysis of the electronic and plasmonic behavior of periodic planar distributions of sufficiently wide graphene nanoribbons, for which a thorough ab initio investigation is practically unfeasible. Our approach is based on a semi-analytical model whose only free parameter is the charge...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/12/2028 |
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| author | Talia Tene Marco Guevara Edwin Viteri Alba Maldonado Michele Pisarra Antonello Sindona Cristian Vacacela Gomez Stefano Bellucci |
| author_facet | Talia Tene Marco Guevara Edwin Viteri Alba Maldonado Michele Pisarra Antonello Sindona Cristian Vacacela Gomez Stefano Bellucci |
| author_sort | Talia Tene |
| collection | DOAJ |
| description | We present an analysis of the electronic and plasmonic behavior of periodic planar distributions of sufficiently wide graphene nanoribbons, for which a thorough ab initio investigation is practically unfeasible. Our approach is based on a semi-analytical model whose only free parameter is the charge carrier velocity, which we estimate by density-functional theory calculations on graphene. By this approach, we show that the plasmon resonance energies of the scrutinized systems fall in the lower THz band, relevant for optoelectronic and photonic applications. We further observe that these energies critically depend on the charge carrier concentration, ribbon width, electron relaxation rate, and in-plane transferred momentum angle, thus, suggesting a tunability of the associated light-matter modes. |
| first_indexed | 2024-03-09T22:53:42Z |
| format | Article |
| id | doaj.art-e5d7ef7ed29e4a6999ffb1feb35736f9 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T22:53:42Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-e5d7ef7ed29e4a6999ffb1feb35736f92023-11-23T18:16:19ZengMDPI AGNanomaterials2079-49912022-06-011212202810.3390/nano12122028Calibration of Fermi Velocity to Explore the Plasmonic Character of Graphene Nanoribbon Arrays by a Semi-Analytical ModelTalia Tene0Marco Guevara1Edwin Viteri2Alba Maldonado3Michele Pisarra4Antonello Sindona5Cristian Vacacela Gomez6Stefano Bellucci7Departamento de Química, Universidad Técnica Particular de Loja, Loja 110160, EcuadorSchool of Physical Sciences and Nanotechnology, Yachay Tech University, Urcuquí 100119, EcuadorFaculty of Mechanical Engineering, Escuela Superior Politécnica de Chimborazo (ESPOCH), Riobamba 060155, EcuadorFacultad de Informática y Electrónica, Escuela Superior Politécnica de Chimborazo (ESPOCH), Riobamba 060155, EcuadorINFN, Sezione LNF, Gruppo Collegato di Cosenza, Cubo 31C, I-87036 Rende, CS, ItalyINFN, Sezione LNF, Gruppo Collegato di Cosenza, Cubo 31C, I-87036 Rende, CS, ItalyUNICARIBE Research Center, University of Calabria, I-87036 Rende, CS, ItalyINFN-Laboratori Nazionali di Frascati, Via E. Fermi 54, I-00044 Frascati, RM, ItalyWe present an analysis of the electronic and plasmonic behavior of periodic planar distributions of sufficiently wide graphene nanoribbons, for which a thorough ab initio investigation is practically unfeasible. Our approach is based on a semi-analytical model whose only free parameter is the charge carrier velocity, which we estimate by density-functional theory calculations on graphene. By this approach, we show that the plasmon resonance energies of the scrutinized systems fall in the lower THz band, relevant for optoelectronic and photonic applications. We further observe that these energies critically depend on the charge carrier concentration, ribbon width, electron relaxation rate, and in-plane transferred momentum angle, thus, suggesting a tunability of the associated light-matter modes.https://www.mdpi.com/2079-4991/12/12/2028graphenegraphene nanoribbonsplasmonsDFTsemi-analytical model |
| spellingShingle | Talia Tene Marco Guevara Edwin Viteri Alba Maldonado Michele Pisarra Antonello Sindona Cristian Vacacela Gomez Stefano Bellucci Calibration of Fermi Velocity to Explore the Plasmonic Character of Graphene Nanoribbon Arrays by a Semi-Analytical Model Nanomaterials graphene graphene nanoribbons plasmons DFT semi-analytical model |
| title | Calibration of Fermi Velocity to Explore the Plasmonic Character of Graphene Nanoribbon Arrays by a Semi-Analytical Model |
| title_full | Calibration of Fermi Velocity to Explore the Plasmonic Character of Graphene Nanoribbon Arrays by a Semi-Analytical Model |
| title_fullStr | Calibration of Fermi Velocity to Explore the Plasmonic Character of Graphene Nanoribbon Arrays by a Semi-Analytical Model |
| title_full_unstemmed | Calibration of Fermi Velocity to Explore the Plasmonic Character of Graphene Nanoribbon Arrays by a Semi-Analytical Model |
| title_short | Calibration of Fermi Velocity to Explore the Plasmonic Character of Graphene Nanoribbon Arrays by a Semi-Analytical Model |
| title_sort | calibration of fermi velocity to explore the plasmonic character of graphene nanoribbon arrays by a semi analytical model |
| topic | graphene graphene nanoribbons plasmons DFT semi-analytical model |
| url | https://www.mdpi.com/2079-4991/12/12/2028 |
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