Graphene nanoribbons with wings

Journal Article · Mon Nov 16 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4935835· OSTI ID:22486098

Eich, M.; Ihn, T.; Ensslin, K. ^[1]; Libisch, F. ^[2]

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1. Solid State Physics Laboratory, ETH Zurich, CH-8093 Zurich (Switzerland)
2. Institute for Theoretical Physics, Vienna University of Technology, A-1040 Vienna (Austria)

We have investigated electronic transport in graphene nanoribbon devices with additional bar-shaped extensions (“wings”) at each side of the device. We find that the Coulomb-blockade dominated transport found in conventional ribbons is strongly modified by the presence of the extensions. States localized far away from the central ribbon contribute significantly to transport. We discuss these findings within the picture of multiple coupled quantum dots. Finally, we compare the experimental results with tight-binding simulations which reproduce the experiment both qualitatively and quantitatively.

• OSTI ID: 22486098
• Journal Information: Applied Physics Letters, Vol. 107, Issue 20; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPARATIVE EVALUATIONS
EQUIPMENT
GRAPHENE
QUANTUM DOTS
SIMULATION