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Signatures of single quantum dots in graphene nanoribbons within the quantum Hall regime

Tovari, Endre and Makk, Peter and Rickhaus, Peter and Schonenberger, Christian and Csonka, Szabolcs. (2016) Signatures of single quantum dots in graphene nanoribbons within the quantum Hall regime. Nanoscale, 8 (22). pp. 11480-11486.

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Abstract

We report on the observation of periodic conductance oscillations near quantum Hall plateaus in suspended graphene nanoribbons. They are attributed to single quantum dots that are formed in the narrowest part of the ribbon, in the valleys and hills of a disorder potential. In a wide flake with two gates, a double-dot system`s signature has been observed. Electrostatic confinement is enabled in single-layer graphene due to the gaps that are formed between the Landau levels, suggesting a way to create gate-defined quantum dots that can be accessed with quantum Hall edge states.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Nanoelektronik (Schönenberger)
UniBasel Contributors:Schönenberger, Christian and Makk, Peter and Rickhaus, Peter and Csonka, Szabolcs
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Royal Society of Chemistry
ISSN:2040-3364
e-ISSN:2040-3372
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:15 Feb 2017 09:02
Deposited On:15 Feb 2017 08:51

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