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arXiv · 0709.3799

Tunable Coulomb blockade in nanostructured graphene

C. Stampfer·J. Guettinger·F. Molitor·D. Graf·T. Ihn·K. Ensslin
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Abstract

We report on Coulomb blockade and Coulomb diamond measurements on an etched, tunable single-layer graphene quantum dot. The device consisting of a graphene island connected via two narrow graphene constrictions is fully tunable by three lateral graphene gates. Coulomb blockade resonances are observed and from Coulomb diamond measurements a charging energy of ~3.5 meV is extracted. For increasing temperatures we detect a peak broadening and a transmission increase of the nanostructured graphene barriers.

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C. Stampfer, J. Guettinger, F. Molitor, D. Graf, T. Ihn, K. Ensslin. 2007-09-24. Tunable Coulomb blockade in nanostructured graphene. https://doi.org/10.1063/1.2827188

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