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説明:

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.

権利情報:

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

キーワード: Moiré superlattice, graphene, band structure engineering

刊行年月日: 2019-04-10

出版者: American Chemical Society (ACS)

掲載誌:

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

研究助成金:

• 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

原稿種別: 出版者版 (Version of record)

MDR DOI:

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

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更新時刻: 2025-02-23 22:49:20 +0900

MDRでの公開時刻: 2025-02-23 22:49:20 +0900