Gate-defined graphene double quantum dot and excited state spectroscopy

Details Gate-defined graphene double quantum dot and excited state spectroscopy Gate-defined graphene double quantum dot and excited state spectroscopy

2009-12-11

arxiv.org/abs/0912.2229v1

Nano Lett., 2010, 10 (5), 1623

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1021/nl9040912

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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