We present quantitative mapping of large area graphene conductance by terahertz time-domain spectroscopy and micro four point probe. We observe a clear correlation between the techniques and identify the observed systematic differences to be directly related to imperfections of the graphene sheet on the length scale of several micrometers.
2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves (irmmw-thz), 2012
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37th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2012)