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Fig. 2


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Reduction of graphene conductivity with increase in modulation frequency and field strength. Symbols – measured real-valued conductivity of graphene as function of THz field strength and THz frequency. Lines – model based on carrier heating as explained in the text. The conductivity is expressed in quantum units of G = e2/4ħ. The blue arrow illustrates the trend in conductivity reduction with increase in driving field frequency.

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