Dynamic Hall Effect Driven by Circularly Polarized Light in a Graphene Layer
Journal article, 2010
We report the observation of the circular ac Hall effect where the current is solely driven by the crossed ac electric and magnetic fields of circularly polarized radiation. Illuminating an unbiased monolayer sheet of graphene with circularly polarized terahertz radiation at room temperature generates-under oblique incidence-an electric current perpendicular to the plane of incidence, whose sign is reversed by switching the radiation helicity. Alike the classical dc Hall effect, the voltage is caused by crossed E and B fields which are, however rotating with the light's frequency.
photon drag
Author
J. Karch
P. Olbrich
M. Schmalzbauer
C. Zoth
C. Brinsteiner
M. Fehrenbacher
U. Wurstbauer
M. M. Glazov
S. A. Tarasenko
E. L. Ivchenko
D. Weiss
J. Eroms
R. Yakimova
Samuel Lara Avila
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Sergey Kubatkin
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
S. D. Ganichev
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 105 22Subject Categories
Physical Sciences
DOI
10.1103/PhysRevLett.105.227402