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Título

Faraday rotation due to excitation of magnetoplasmons in graphene microribbons

AutorTymchenko, Mykhailo; Nikitin, A. Yu; Martín-Moreno, Luis
Palabras claveMagnetic field
Faraday rotation
Graphene magnetoplasmons (GMP)
Graphene ribbons
Fecha de publicación2013
EditorAmerican Chemical Society
CitaciónACS Nano 7(11): 9780-9787 (2013)
ResumenA single graphene sheet, when subjected to a perpendicular static magnetic field, provides a Faraday rotation that, per atomic layer, greatly surpasses that of any other known material. In continuous graphene, Faraday rotation originates from the cyclotron resonance of massless carriers, which allows dynamical tuning through either external electrostatic or magneto-static setting. Furthermore, the rotation direction can be controlled by changing the sign of the carriers in graphene, which can be done by means of an external electric field. However, despite these tuning possibilities, the requirement of large magnetic fields hinders the application of the Faraday effect in real devices, especially for frequencies higher than a few terahertz. In this work we demonstrate that large Faraday rotation can be achieved in arrays of graphene microribbons, through the excitation of the magnetoplasmons of individual ribbons, at larger frequencies than those dictated by the cyclotron resonance. In this way, for a given magnetic field and chemical potential, structuring graphene periodically can produce large Faraday rotation at larger frequencies than what would occur in a continuous graphene sheet. Alternatively, at a given frequency, graphene ribbons produce large Faraday rotation at much smaller magnetic fields than in continuous graphene. © 2013 American Chemical Society.
Versión del editorhttp://dx.doi.org/10.1021/nn403282x
URIhttp://hdl.handle.net/10261/117601
DOI10.1021/nn403282x
Identificadoresdoi: 10.1021/nn403282x
issn: 1936-0851
e-issn: 1936-086X
Aparece en las colecciones: (ICMA) Artículos
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