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Gate-defined graphene double quantum dot and excited state spectroscopy
Published 11 Dec 2009 in cond-mat.mes-hall | (0912.2229v1)
Abstract: A double quantum dot is formed in a graphene nanoribbon device using three top gates. These gates independently change the number of electrons on each dot and tune the inter-dot coupling. Transport through excited states is observed in the weakly coupled double dot regime. We extract from the measurements all relevant capacitances of the double dot system, as well as the quantized level spacing.
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