Terahertz radiation induced edge currents in graphene

Author

Drexler, C. ; Karch, J. ; Olbrich, P. ; Fehrenbacher, M. ; Glazov, M.M. ; Tarasenko, S.A. ; Weiss, D. ; Eroms, J. ; Yakimova, R. ; Lara-Avila, S. ; Kubatkin, S. ; Ivchenko, E.L. ; Ostler, M. ; Fromm, F. ; Seyller, T. ; Ganichev, S.D.

Author_Institution

Terahertz Center, Univ. of Regensburg, Regensburg, Germany

fYear

2011

fDate

2-7 Oct. 2011

Firstpage

1

Lastpage

1

Abstract

We report on the observation of the terahertz radiation induced edge photogalvanic effect. The directed net electric current is generated in single layer graphene by the irradiation of the samples´ edges with linearly or circularly polarized terahertz laser radiation at normal incidence. We show that the directed net electric current stems from the sample edges, which reduce locally the symmetry and result in an asymmetric scattering of carriers driven by the radiation field.

Keywords

electric current; graphene; high-frequency effects; laser beam effects; photoconductivity; photovoltaic effects; terahertz waves; C; asymmetric carrier scattering; electric current; polarized terahertz laser radiation; single layer graphene; terahertz radiation induced edge photogalvanic effect; Biomedical optical imaging; Current; Educational institutions; Optical polarization; Optical scattering; Photoconductivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on

Conference_Location

Houston, TX

ISSN

2162-2027

Print_ISBN

978-1-4577-0510-6

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/irmmw-THz.2011.6105064

Filename

6105064