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Observation of intra- and inter-band transitions in the optical response of gra...
Malard, Leandro M.; Mak, Kin Fai; Castro Neto, A. H.; Peres, N. M. R.; Heinz, Tony F.The optical conductivity of freely suspended graphene was examined under non-equilibrium conditions using femtosecond pump-probe spectroscopy. We observed a conductivity transient that varied strongly with the electronic temperature, exhibiting a crossover from enhanced to decreased absorbance with increasing pump fluence. The response arises from a combination of bleaching of the inter-band transitions by Paul...
Data: 2013
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Origem: RepositóriUM - Universidade do Minho
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