Tunable Coulomb blockade in nanostructured graphene

Details Tunable Coulomb blockade in nanostructured graphene Tunable Coulomb blockade in nanostructured graphene

2007-09-24

arxiv.org/abs/0709.3799v1

Appl. Phys. Lett., 92, 012102, (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1063/1.2827188

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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