Tunable Coulomb blockade in nanostructured graphene

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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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Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/146443

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0709.3799
 http://arxiv.org/abs/0709.3799
 Appl. Phys. Lett., 92, 012102, (2008)
 doi:10.1063/1.2827188

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arXiv