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Issue 22, 2016
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Signatures of single quantum dots in graphene nanoribbons within the quantum Hall regime

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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.

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

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Publication details

The article was received on 08 Jan 2016, accepted on 04 May 2016 and first published on 06 May 2016


Article type: Paper
DOI: 10.1039/C6NR00187D
Citation: Nanoscale, 2016,8, 11480-11486
  • Open access: Creative Commons BY license
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    Signatures of single quantum dots in graphene nanoribbons within the quantum Hall regime

    E. Tóvári, P. Makk, P. Rickhaus, C. Schönenberger and S. Csonka, Nanoscale, 2016, 8, 11480
    DOI: 10.1039/C6NR00187D

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