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説明:

Moiré superlattices formed by twisting trilayers of graphene are a useful model for studying correlated electron behavior and offer several advantages over their formative bilayer analogues, including a more diverse collection of correlated phases and more robust superconductivity. Spontaneous structural relaxation significantly alters the behavior of moiré superlattices, and has been suggested to play an important role in the relative stability of superconductivity in trilayers. Here, we use an interferometric four-dimensional scanning transmission electron microscopy approach to directly probe the local graphene layer alignment over a wide range of trilayer graphene structures. Our results inform a thorough understanding of how reconstruction modulates the local lattice symmetries crucial for establishing correlated phases in twisted graphene trilayers, evincing a relaxed structure that is markedly different from that proposed previously.

権利情報:

• In Copyright
  This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1038/s41563-023-01783-y

キーワード: Moiré superlattices, Twisted trilayer graphene, Correlated electron behavior

刊行年月日: 2024-01-08

出版者: Springer Science and Business Media LLC

掲載誌:

• Nature Materials (ISSN: 14764660) vol. 23 issue. 3 p. 323-330

研究助成金:

• MEXT | Japan Society for the Promotion of Science 21H05233
• National Science Foundation 2238196
• W. M. Keck Foundation 993922
• W. M. Keck Foundation 993922
• DOE | SC | Basic Energy Sciences DE-AC02-05CH11231
• DOE | SC | Basic Energy Sciences DE-AC02-05CH11231
• United States Department of Defense | United States Navy | Office of Naval Research N00014-20-1-2599
• Gordon and Betty Moore Foundation 10637
• Gordon and Betty Moore Foundation 10637
• Gordon and Betty Moore Foundation 10637
• National Defense Science and Engineering Graduate Fellowship
• MEXT | Japan Society for the Promotion of Science 19H05790
• MEXT | Japan Society for the Promotion of Science 20H00354
• MEXT | Japan Society for the Promotion of Science 21H05233
• MEXT | Japan Society for the Promotion of Science 19H05790
• MEXT | Japan Society for the Promotion of Science 20H00354

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI:

公開URL: https://doi.org/10.1038/s41563-023-01783-y

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更新時刻: 2025-09-03 15:03:39 +0900

MDRでの公開時刻: 2025-09-03 16:18:52 +0900