Giant Faraday rotation in single- and multilayer graphene

Crassee I, Levallois J, Walter AL, Ostler M, Bostwick A, Rotenberg E, Seyller T, Van Der Marel D, Kuzmenko AB (2010)

Publication Type: Journal article

Publication year: 2010

Journal

Nature Physics Nature Publishing Group

Book Volume: 7

Pages Range: 48-51

Journal Issue: 1

DOI: 10.1038/nphys1816

Abstract

The rotation of the polarization of light after passing a medium in a magnetic field, discovered by Faraday, is an optical analogue of the Hall effect, which combines sensitivity to the carrier type with access to a broad energy range. Up to now the thinnest structures showing the Faraday rotation were several-nanometre-thick two-dimensional electron gases. As the rotation angle is proportional to the distance travelled by the light, an intriguing issue is the scale of this effect in two-dimensional atomic crystals or films---the ultimately thin objects in condensed matter physics. Here we demonstrate that a single atomic layer of carbon---graphene---turns the polarization by several degrees in modest magnetic fields. Such a strong rotation is due to the resonances originating from the cyclotron effect in the classical regime and the inter-Landau-level transitions in the quantum regime. Combined with the possibility of ambipolar doping, this opens pathways to use graphene in fast tunable ultrathin infrared magneto-optical devices.

Authors with CRIS profile

Markus Ostler Lehrstuhl für Laserphysik Thomas Seyller Lehrstuhl für Laserphysik

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials

Involved external institutions

University of Geneva / Université de Genève (UNIGE) CH Switzerland (CH) Fritz-Haber-Institut der Max-Planck-Gesellschaft (FHI) DE Germany (DE) Lawrence Berkeley National Laboratory (LBNL) US United States (USA) (US)

How to cite

APA:

Crassee, I., Levallois, J., Walter, A.L., Ostler, M., Bostwick, A., Rotenberg, E.,... Kuzmenko, A.B. (2010). Giant Faraday rotation in single- and multilayer graphene. Nature Physics, 7(1), 48-51. https://dx.doi.org/10.1038/nphys1816

MLA:

Crassee, Iris, et al. "Giant Faraday rotation in single- and multilayer graphene." Nature Physics 7.1 (2010): 48-51.

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