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Title: Graphene nanoribbons with wings

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.
Authors:
; ; ;  [1] ;  [2]
  1. Solid State Physics Laboratory, ETH Zurich, CH-8093 Zurich (Switzerland)
  2. Institute for Theoretical Physics, Vienna University of Technology, A-1040 Vienna (Austria)
Publication Date:
OSTI Identifier:
22486098
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 20; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPARATIVE EVALUATIONS; EQUIPMENT; GRAPHENE; QUANTUM DOTS; SIMULATION