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説明:

The extrinsic stacking sequence based on intrinsic crystal symmetry in multilayer two-dimensional materials plays a significant role in determining their electronic and optical properties. Compared with Bernal-stacked (ABA) multilayer graphene, rhombohedral (ABC) multilayer graphene hosts stronger electron-electron interaction due to its unique dispersion at low-energy excitations and has been utilized as a unique platform to explore strongly correlated physics. However, discerning the stacking sequence via scanning mapping methods has always been a fairly time-consuming process. Here, we report a rapid recognition method for ABC-stacked graphene with high accuracy by infrared imaging based on the distinct optical responses in the infrared range. The optical contrast of the image between ABC- and ABA-stacked graphene is strikingly clear, and the discernibility is comparable to traditional optical Raman microscopy but with higher consistency and throughput. We demonstrate that the infrared imaging technique can be integrated with dry transfer techniques commonly used in the literature. This rapid and convenient infrared imaging technique will significantly improve the sorting efficiency for differently stacked multilayer graphene, thereby accelerating the exploration of the novel emergent correlated phenomena in ABC-stacked graphene.

権利情報:

• In Copyright
  

  © 2025 American Physical Society

キーワード: Rhombohedral (ABC) stacked graphene, Infrared imaging, Stacking sequence recognition

刊行年月日: 2025-03-06

出版者: American Physical Society (APS)

掲載誌:

• Physical Review Applied (ISSN: 23317019) vol. 23 issue. 3 034012

研究助成金:

• National Key R&D Program 2022YFA1403500/02
• National Natural Science Foundation of China 12141401
• National Natural Science Foundation of China 52025023
• National Natural Science Foundation of China 11888101
• National Natural Science Foundation of China T2188101

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI:

公開URL: https://doi.org/10.1103/PhysRevApplied.23.034012

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更新時刻: 2026-07-06 10:50:10 +0900

MDRでの公開時刻: 2026-07-06 12:30:05 +0900