On-Surface Synthesis of Nitrogen-Doped Kagome Graphene

Pawlak, Rémy and Liu, Xunshan and Ninova, Silviya and D'Astolfo, Philipp and Drechsel, Carl and Liu, Jung-Ching and Häner, Robert and Decurtins, Silvio and Aschauer, Ulrich and Liu, Shi-Xia and Meyer, Ernst. (2021) On-Surface Synthesis of Nitrogen-Doped Kagome Graphene. Angewandte Chemie International Edition, 60 (15). pp. 8370-8375.

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Official URL: https://edoc.unibas.ch/86792/

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Nitrogen-doped Kagome graphene (N-KG) has been theoretically predicted as a candidate for the emergence of a topological band gap as well as unconventional superconductivity. However, its physical realization still remains very elusive. Here, we report on a substrate-assisted reaction on Ag(111) for the synthesis of two-dimensional graphene sheets possessing a long-range honeycomb Kagome lattice. Low-temperature scanning tunneling microscopy (STM) and atomic force microscopy (AFM) with a CO-terminated tip supported by density functional theory (DFT) are employed to scrutinize the structural and electronic properties of the N-KG down to the atomic scale. We demonstrate its semiconducting character due to the nitrogen doping as well as the emergence of Kagome flat bands near the Fermi level which would open new routes towards the design of graphene-based topological materials.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Nanomechanik (Meyer)
UniBasel Contributors:Meyer, Ernst and Pawlak, Rémy
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:11 Apr 2022 15:25
Deposited On:11 Apr 2022 15:25

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