Hybrid plasmon-magnon polaritons in graphene-antiferromagnet heterostructures
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Título: | Hybrid plasmon-magnon polaritons in graphene-antiferromagnet heterostructures |
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Autor/es: | Bludov, Yuliy | Gomes, José N. | Farias, Gil de Aquino | Fernández-Rossier, Joaquín | Vasilevskiy, Mikhail I. | Peres, Nuno M.R. |
Grupo/s de investigación o GITE: | Grupo de Nanofísica |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física Aplicada |
Palabras clave: | Polariton | Magnon | Graphene surface plasmon | Hybrid system |
Área/s de conocimiento: | Física de la Materia Condensada |
Fecha de publicación: | 1-jul-2019 |
Editor: | IOP Publishing |
Cita bibliográfica: | 2D Materials. 2019, 6: 045003. doi:10.1088/2053-1583/ab2513 |
Resumen: | We consider a hybrid structure formed by graphene and an insulating antiferromagnet, separated by a dielectric of thickness up to nm. When uncoupled, both graphene and the antiferromagnetic surface host their own polariton modes coupling the electromagnetic field with plasmons in the case of graphene, and with magnons in the case of the antiferromagnet. We show that the hybrid structure can host two new types of hybrid polariton modes. First, a surface magnon-plasmon polariton whose dispersion is radically changed by the carrier density of the graphene layer, including a change of sign in the group velocity. Second, a surface plasmon-magnon polariton formed as a linear superposition of graphene surface plasmon and the antiferromagnetic bare magnon. This polariton has a dispersion with two branches, formed by the anticrossing between the dispersive surface plasmon and the magnon. We discuss the potential these new modes have for combining photons, magnons, and plasmons to reach new functionalities. |
Patrocinador/es: | YB, MV and NMRP acknowledge support from the European Commission through the project ‘Graphene—Driven Revolutions in ICT and Beyond’ (Ref. No. 785219), and the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Financing UID/FIS/04650/2013. Additionally, NMRP acknowledges COMPETE2020, PORTUGAL2020, FEDER and the Portuguese Foundation for Science and Technology (FCT) through project PTDC/FIS-NAN/3668/2013 and FEDER and the portuguese Foundation for Science and Technology (FCT) through project POCI-01-0145-FEDER-028114. G A Farias acknowledge support from the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) of Brazil. JF-R acknowledges financial support from FCT for the P2020-PTDC/FIS-NAN/4662/2014, the P2020-PTDC/FIS-NAN/3668/2014 and the UTAPEXPL/NTec/0046/2017 projects, as well as Generalitat Valenciana funding Prometeo2017/139 and MINECO Spain (Grant No. MAT2016-78625-C2). |
URI: | http://hdl.handle.net/10045/95427 |
ISSN: | 2053-1583 |
DOI: | 10.1088/2053-1583/ab2513 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2019 IOP Publishing Ltd |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1088/2053-1583/ab2513 |
Aparece en las colecciones: | INV - Grupo de Nanofísica - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2019_Bludov_etal_2DMater_final.pdf | Versión final (acceso restringido) | 2,16 MB | Adobe PDF | Abrir Solicitar una copia |
2019_Bludov_etal_2DMater_preprint.pdf | Preprint (acceso abierto) | 1,82 MB | Adobe PDF | Abrir Vista previa |
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