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

Endre Tóvári, Péter Makk, Peter Rickhaus, Christian Schönenberger, Szabolcs Csonka

Research output: Article

9 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)11480-11486
Number of pages7
JournalNanoscale
Volume8
Issue number22
DOIs
Publication statusPublished - jún. 14 2016

ASJC Scopus subject areas

  • Materials Science(all)

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