Resolving Atomic Connectivity in Graphene Nanostructure Junctions

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• 作者：Thomas Dienel ; Shigeki Kawai ; Hajo S枚de ; Xinliang Feng ; Klaus M眉llen ; Pascal Ruffieux ; Roman Fasel ; Oliver Gr枚ning
• 刊名：Nano Letters
• 出版年：2015
• 出版时间：August 12, 2015
• 年：2015
• 卷：15
• 期：8
• 页码：5185-5190
• 全文大小：429K
• ISSN：1530-6992

文摘

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.