Tunable Coulomb blockade in nanostructured graphene
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 ≈3.5meV is extracted. For increasing temperatures, we detect a peak broadening and a transmission increase of the nanostructured graphene barriers.
- Publication:
-
Applied Physics Letters
- Pub Date:
- January 2008
- DOI:
- arXiv:
- arXiv:0709.3799
- Bibcode:
- 2008ApPhL..92a2102S
- Keywords:
-
- 73.23.Hk;
- 73.21.La;
- Coulomb blockade;
- single-electron tunneling;
- Quantum dots;
- Condensed Matter - Mesoscopic Systems and Quantum Hall Effect
- E-Print:
- Appl. Phys. Lett., 92, 012102, (2008)