TITLE

Faraday rotation in magnetically biased graphene at microwave frequencies

AUTHOR(S)
Sounas, D. L.; Skulason, H. S.; Nguyen, H. V.; Guermoune, A.; Siaj, M.; Szkopek, T.; Caloz, C.
PUB. DATE
May 2013
SOURCE
Applied Physics Letters;5/13/2013, Vol. 102 Issue 19, p191901
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Faraday rotation is experimentally observed at microwave frequencies in a large-area graphene sheet biased with a static magnetic field, and interrogated by polarized fields in a hollow circular waveguide. A Faraday rotation of up to 1.5° and an isolation of more than 30 dB is observed, suggesting possible applications to graphene based isolators, circulators, and other non-reciprocal devices. An analytic model is developed for the scattering parameters of the measured structure. The model shows excellent agreement with the measurements and is used to extract the graphene conductivity, carrier density, and mobility.
ACCESSION #
87655949

 

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