Electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene

Poumirol, J.M. ; Liu, P.Q. ; Slipchenko, T.M. ; Nikitin, A.Y. ; Martin-Moreno, L. (Universidad de Zaragoza) ; Faist, J. ; Kuzmenko, A.B.

Resumen: The magnetic circular dichroism and the Faraday rotation are the fundamental phenomena of great practical importance arising from the breaking of the time reversal symmetry by a magnetic field. In most materials, the strength and the sign of these effects can be only controlled by the field value and its orientation. Furthermore, the terahertz range is lacking materials having the ability to affect the polarization state of the light in a non-reciprocal manner. Here we demonstrate, using broadband terahertz magneto-electro-optical spectroscopy, that in graphene both the magnetic circular dichroism and the Faraday rotation can be modulated in intensity, tuned in frequency and, importantly, inverted using only electrostatic doping at a fixed magnetic field. In addition, we observe strong magneto-plasmonic resonances in a patterned array of graphene antidots, which potentially allows exploiting these magneto-optical phenomena in a broad THz range.

Idioma: Inglés

DOI: 10.1038/ncomms14626

Año: 2017

Publicado en: Nature Communications 8 (2017), 14626 [6 pp.]
ISSN: 2041-1723

Factor impacto JCR: 12.353 (2017)

Categ. JCR: MULTIDISCIPLINARY SCIENCES rank: 3 / 64 = 0.047 (2017) - Q1 - T1

Factor impacto SCIMAGO: 6.582 - Biochemistry, Genetics and Molecular Biology (miscellaneous) (Q1) - Physics and Astronomy (miscellaneous) (Q1) - Chemistry (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/FP7/604391/EU/Graphene-Based Revolutions in ICT And Beyond/GRAPHENE
Financiación: info:eu-repo/grantAgreement/EC/H2020/696656/EU/Graphene-based disruptive technologies/GrapheneCore1
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-53432-C5

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)