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説明:

Flavor (spin and valley) order plays a critical role in the physics of flatband graphene systems, leading for example to Fermi surface reconstructions1–7, and quantum anomalous Hall states7–11. Understanding the interplay between flavor order and superconductivity stands as a key research goal. Here we establish an optical technique that sensitively and selectively detects flavor textures in flatband graphene. By performing a systematic study across natural and magic-angle-twisted bilayer and trilayer graphene and comparing with theory, we show that it provides information that is distinct from and complementary to electrical compressibility measurements. The wide-field imaging capability of optical probes allows us to obtain spatial maps of flavor orders with high throughput, and with broad temperature and device compatibility.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: flavor order, flat band graphene
, optical imaging

刊行年月日: 2025-07-01

出版者: Springer Science and Business Media LLC

掲載誌:

• Nature Communications (ISSN: 20411723) vol. 16 issue. 1 p. 5555-5555 5555

研究助成金:

• United States Department of Defense | United States Air Force | AFMC | Air Force Office of Scientific Research FA9550-23-1-0117
• National Science Foundation Grant No.2139319
• National Science Foundation DMR–2308817
• National Science Foundation DMR–2308817
• National Science Foundation DMR–2308817
• National Science Foundation DMR–2308817
• MEXT | Japan Society for the Promotion of Science 20H00354
• MEXT | Japan Society for the Promotion of Science 23H02052
• MEXT | Japan Society for the Promotion of Science 20H00354
• MEXT | Japan Society for the Promotion of Science 23H02052
• World Premier International Research Center Initiative (WPI), MEXT, Japan
• U.S. Department of Energy DOE-SC0020653
• U.S. Department of Energy DE-SC0020043
• NSF | Directorate for Mathematical & Physical Sciences | Division of Materials Research DMR 2111812
• NSF | Directorate for Mathematical & Physical Sciences | Division of Materials Research DMR 2206987
• NSF | Directorate for Mathematical & Physical Sciences | Division of Materials Research DMR-1906325
• NSF | ENG/OAD | Division of Civil, Mechanical and Manufacturing Innovation CMMI 2129412
• Lawrence Semiconductor Labs
• Gordon and Betty Moore Foundation GBMF9471
• David and Lucile Packard Foundation 2016-65145

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1038/s41467-025-60675-8

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更新時刻: 2026-05-11 13:14:15 +0900

MDRでの公開時刻: 2026-05-11 16:25:08 +0900