Giant Faraday rotation in single- and multilayer graphene

Journal article

Publication Details

Author(s): Crassee I, Levallois J, Walter AL, Ostler M, Bostwick A, Rotenberg E, Seyller T, Van Der Marel D, Kuzmenko AB
Journal: Nature Physics
Publication year: 2010
Volume: 7
Journal issue: 1
Pages range: 48-51
ISSN: 1745-2473


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.

FAU Authors / FAU Editors

Ostler, Markus
Lehrstuhl für Laserphysik
Seyller, Thomas PD Dr.
Lehrstuhl für Laserphysik

Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials

External institutions with authors

Fritz-Haber-Institut der Max-Planck-Gesellschaft (FHI)
Lawrence Berkeley National Laboratory (LBNL)
University of Geneva / Université de Genève (UNIGE)

Research Fields

B Nanoelectronic Materials
Exzellenz-Cluster Engineering of Advanced Materials

How to cite

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.

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


Last updated on 2019-21-03 at 09:08