Journal
NANO LETTERS
Volume 15, Issue 8, Pages 5185-5190Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b01403
Keywords
Two-dimensional material; graphene nanoribbon; noncontact atomic force microscopy; nc-AFM; scanning tunneling microscopy; tight binding
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Funding
- Swiss National Science Foundation (SNSF)
- Office of Naval Research BRC program
- Japan Science and Technology Agency (JST)
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We report on the structural characterization of junctions between atomically well-defined graphene nanoribbons (GNRs) by means of low-temperature, noncontact scanning probe microscopy. We show that the combination of simultaneously acquired frequency shift and tunneling current maps with tight binding (TB) simulations allows a comprehensive characterization of the atomic connectivity in the GNR junctions. The proposed approach can be generally applied to the investigation of graphene nanomaterials and their interconnections and is thus expected to become an important tool in the development of graphene-based circuitry.
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