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

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 an...

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Autores principales: Poumirol, Jean-Marie, Liu, Peter Q., Slipchenko, Tetiana M., Nikitin, Alexey Y., Martin-Moreno, Luis, Faist, Jérôme, Kuzmenko, Alexey B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5344301/
https://www.ncbi.nlm.nih.gov/pubmed/28266509
http://dx.doi.org/10.1038/ncomms14626
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author Poumirol, Jean-Marie
Liu, Peter Q.
Slipchenko, Tetiana M.
Nikitin, Alexey Y.
Martin-Moreno, Luis
Faist, Jérôme
Kuzmenko, Alexey B.
author_facet Poumirol, Jean-Marie
Liu, Peter Q.
Slipchenko, Tetiana M.
Nikitin, Alexey Y.
Martin-Moreno, Luis
Faist, Jérôme
Kuzmenko, Alexey B.
author_sort Poumirol, Jean-Marie
collection PubMed
description 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.
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spelling pubmed-53443012017-03-17 Electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene Poumirol, Jean-Marie Liu, Peter Q. Slipchenko, Tetiana M. Nikitin, Alexey Y. Martin-Moreno, Luis Faist, Jérôme Kuzmenko, Alexey B. Nat Commun Article 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. Nature Publishing Group 2017-03-07 /pmc/articles/PMC5344301/ /pubmed/28266509 http://dx.doi.org/10.1038/ncomms14626 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Poumirol, Jean-Marie
Liu, Peter Q.
Slipchenko, Tetiana M.
Nikitin, Alexey Y.
Martin-Moreno, Luis
Faist, Jérôme
Kuzmenko, Alexey B.
Electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene
title Electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene
title_full Electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene
title_fullStr Electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene
title_full_unstemmed Electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene
title_short Electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene
title_sort electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5344301/
https://www.ncbi.nlm.nih.gov/pubmed/28266509
http://dx.doi.org/10.1038/ncomms14626
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