Tuning of magnetosplamon coupling between graphene scatterers for the optimal design of adjustable metasurfaces
The resonance characteristics of magnetically-biased graphene micro-scatterers are thoroughly investigated in the present work using both eigenvalue and full-wave solvers. Initially, the graphene surface conductivity is presented in a tensor form due to the application of a magnetostatic bias field,...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2024-02-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/9.0000808 |
| _version_ | 1797278258916491264 |
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| author | Stamatios Amanatiadis Tadao Ohtani Yasushi Kanai Nikolaos Kantartzis |
| author_facet | Stamatios Amanatiadis Tadao Ohtani Yasushi Kanai Nikolaos Kantartzis |
| author_sort | Stamatios Amanatiadis |
| collection | DOAJ |
| description | The resonance characteristics of magnetically-biased graphene micro-scatterers are thoroughly investigated in the present work using both eigenvalue and full-wave solvers. Initially, the graphene surface conductivity is presented in a tensor form due to the application of a magnetostatic bias field, which is perpendicular to the material’s surface. Then, the simple case of a graphene disk scatterer is examined, and a properly modified eigenvalue formulation is utilized to extract the plasmonic fundamental frequencies. The validity of the modal analysis is verified via a full-wave analysis that involves a plane-wave propagation and the extraction of the subsequent absorption cross-section utilizing the Finite-Difference Time-Domain method. Additionally, the dependence of a single disk scatterer resonances with the magnetostatic bias is evaluated, highlighting that as the bias field is increased, every edge mode degenerates into two sub-modes with an augmented difference between the resonant frequencies. Finally, the plasmonic coupling between adjacent scatterers is studied considering a periodic arrangement, similar to a metasurface, indicating the additional coupling modes as well as the adjustability of the properties with multiple degrees of freedom. |
| first_indexed | 2024-03-07T16:00:41Z |
| format | Article |
| id | doaj.art-126f21729f9947d8a2ef5ecd80c16484 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-03-07T16:00:41Z |
| publishDate | 2024-02-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-126f21729f9947d8a2ef5ecd80c164842024-03-04T21:29:33ZengAIP Publishing LLCAIP Advances2158-32262024-02-01142025225025225-510.1063/9.0000808Tuning of magnetosplamon coupling between graphene scatterers for the optimal design of adjustable metasurfacesStamatios Amanatiadis0Tadao Ohtani1Yasushi Kanai2Nikolaos Kantartzis3Aristotle University of Thessaloniki, Thessaloniki 54124, Greece1-17-134 Omachi, Asahikawa 070-0841, JapanNiigata Institute of Technology, Kashiwazaki 945-1195, JapanAristotle University of Thessaloniki, Thessaloniki 54124, GreeceThe resonance characteristics of magnetically-biased graphene micro-scatterers are thoroughly investigated in the present work using both eigenvalue and full-wave solvers. Initially, the graphene surface conductivity is presented in a tensor form due to the application of a magnetostatic bias field, which is perpendicular to the material’s surface. Then, the simple case of a graphene disk scatterer is examined, and a properly modified eigenvalue formulation is utilized to extract the plasmonic fundamental frequencies. The validity of the modal analysis is verified via a full-wave analysis that involves a plane-wave propagation and the extraction of the subsequent absorption cross-section utilizing the Finite-Difference Time-Domain method. Additionally, the dependence of a single disk scatterer resonances with the magnetostatic bias is evaluated, highlighting that as the bias field is increased, every edge mode degenerates into two sub-modes with an augmented difference between the resonant frequencies. Finally, the plasmonic coupling between adjacent scatterers is studied considering a periodic arrangement, similar to a metasurface, indicating the additional coupling modes as well as the adjustability of the properties with multiple degrees of freedom.http://dx.doi.org/10.1063/9.0000808 |
| spellingShingle | Stamatios Amanatiadis Tadao Ohtani Yasushi Kanai Nikolaos Kantartzis Tuning of magnetosplamon coupling between graphene scatterers for the optimal design of adjustable metasurfaces AIP Advances |
| title | Tuning of magnetosplamon coupling between graphene scatterers for the optimal design of adjustable metasurfaces |
| title_full | Tuning of magnetosplamon coupling between graphene scatterers for the optimal design of adjustable metasurfaces |
| title_fullStr | Tuning of magnetosplamon coupling between graphene scatterers for the optimal design of adjustable metasurfaces |
| title_full_unstemmed | Tuning of magnetosplamon coupling between graphene scatterers for the optimal design of adjustable metasurfaces |
| title_short | Tuning of magnetosplamon coupling between graphene scatterers for the optimal design of adjustable metasurfaces |
| title_sort | tuning of magnetosplamon coupling between graphene scatterers for the optimal design of adjustable metasurfaces |
| url | http://dx.doi.org/10.1063/9.0000808 |
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