Title :
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
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;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4577-0510-6
Electronic_ISBN :
2162-2027
DOI :
10.1109/irmmw-THz.2011.6105064
