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The specific rotational alignment of two-dimensional lattices results in a moir ́e superlattice with a larger period than the original lattices and allows one to engineer the electronic band struc- ture of such materials. So far, transport signatures of such superlattices have been reported for graphene/hBN and graphene/graphene systems. Here we report moir ́e superlattices in fully hBN encapsulated graphene with both the top and the bottom hBN aligned to the graphene. In the graphene two different moir ́e superlattices form with the top and the bottom hBN, respectively. The overlay of the two superlattices can result in a third superlattice with a period larger than the maximum period (14 nm) in the graphene/hBN system, which we explain in a simple model. This
new type of band structure engineering allows one electronic properties in two-dimensional materials.

Rights:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

Keyword: Moiré superlattice, graphene, band structure engineering

Date published: 2019-04-10

Publisher: American Chemical Society (ACS)

Journal:

• Nano Letters (ISSN: 15306984) vol. 19 issue. 4 p. 2371-2376

Funding:

• Schweizerischer Nationalfonds zur F??rderung der Wissenschaftlichen Forschung
• Ministry of Science and Technology, Taiwan 107-2112-M-006-004-MY3
• H2020 Future and Emerging Technologies 696656
• Swiss Nanoscience Institute, University of Basel
• Magyar Tudom?nyos Akad?mia
• H2020 European Research Council 787414
• Orsz?gos Tudom?nyos Kutat?si Alapprogramok OTKA FK-123894
• H2020 Marie Sklodowska-Curie Actions
• Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung
• Nemzeti Kutat?si, Fejleszt?si ?s Innov?ci?s Hivatal 2017-1.2.1-NKP-2017-00001

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1021/acs.nanolett.8b05061

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Updated at: 2025-02-23 22:49:20 +0900

Published on MDR: 2025-02-23 22:49:20 +0900