# Strong electron–phonon coupling in magic-angle twisted bilayer graphene https://mdr.nims.go.jp/datasets/f70e7072-1c3b-4edb-92a8-141545f36359 ## File - [s41586-024-08227-w.pdf](https://mdr.nims.go.jp/filesets/5dd5cc5e-9479-461f-92ee-8ba50ebc63ec/download) ([Detail](https://mdr.nims.go.jp/filesets/5dd5cc5e-9479-461f-92ee-8ba50ebc63ec.md)) ## Id f70e7072-1c3b-4edb-92a8-141545f36359 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2026-02-14T06:10:28.167023Z ## Updated at 2026-02-16T07:30:21.110692Z ## Published at 2026-02-16T04:57:35.037769Z ## Doi ## First published url https://doi.org/10.1038/s41586-024-08227-w ## Date published 2024-12-12 ## Recorded date published 2024-12-12 ## Resource type journal_article ## Manuscript type vor ## Collection ## Title - title: Strong electron–phonon coupling in magic-angle twisted bilayer graphene title_type: original lang: en ## Description - description: The unusual properties of superconductivity in magic-angle twisted bilayer graphene (MATBG) have sparked enormous research interest1-13. However, despite the dedication of intensive experimental efforts and the proposal of several possible pairing mechanisms14-22, the origin of its superconductivity remains elusive. Here, using angle- resolved photoemission spectroscopy with micrometer spatial resolution, we discover replicas of the flat bands in superconducting MATBG unaligned with its hexagonal boron nitride (hBN) substrate, which are absent in non-superconducting MATBG aligned with the hBN substrate. Crucially, the replicas are evenly spaced in energy, separated by 150 ± 15 meV, signalling the strong coupling of electrons in MATBG to a bosonic mode of this energy. By comparing our observations to simulations, the formation of replicas is attributed to the presence of strong inter-valley electron-phonon coupling to a K-point phonon mode. In total, the observation of these replica flat bands and the corresponding phonon mode in MATBG could provide important information for understanding the origin and the unusual properties of its superconducting phase. description_type: abstract lang: und ## Creator - name: Cheng Chen role: author - name: Kevin P. Nuckolls role: author - name: Shuhan Ding role: author - name: Wangqian Miao role: author - name: Dillon Wong role: author - name: Myungchul Oh role: author - name: Ryan L. Lee role: author - name: Shanmei He role: author - name: Cheng Peng role: author - name: Ding Pei role: author - name: Yiwei Li role: author - name: Chenyue Hao role: author - name: Haoran Yan role: author - name: Hanbo Xiao role: author - name: Han Gao role: author - name: Qiao Li role: author - name: Shihao Zhang role: author - name: Jianpeng Liu role: author - name: Lin He role: author - name: Kenji Watanabe role: author orcid: https://orcid.org/0000-0003-3701-8119 organization: National Institute for Materials Science - name: Takashi Taniguchi role: author orcid: https://orcid.org/0000-0002-1467-3105 organization: National Institute for Materials Science - name: Chris Jozwiak role: author - name: Aaron Bostwick role: author - name: Eli Rotenberg role: author - name: Chu Li role: author - name: Xu Han role: author - name: Ding Pan role: author - name: Zhongkai Liu role: author - name: Xi Dai role: author - name: Chaoxing Liu role: author - name: B. Andrei Bernevig role: author - name: Yao Wang role: author - name: Ali Yazdani role: author - name: Yulin Chen role: author ## Contact agent ## Publisher organization: Springer Science and Business Media LLC ## Managing organization ## Keyword - subject: 'magic-angle twisted bilayer graphene (MATBG)
 ' schema: not_defined - subject: 'electron-phonon coupling
 ' schema: not_defined - subject: 'superconductivity
 ' schema: not_defined ## Rights - identifier: https://creativecommons.org/licenses/by/4.0/ date_licensed: 2024-12-11 ## Other identifier(s) ## Data origin - data_origin_type: other ## Embargo ## Journal - title: Nature issn: '00280836' volume: '636' start_page: 342 end_page: 347 ## Conference ## Related item ## Funding ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: 5dd5cc5e-9479-461f-92ee-8ba50ebc63ec filename: s41586-024-08227-w.pdf content_type: application/pdf size: 3243580 md5: 6479c1070c45319724e7fdc5b97d288d ## Thumbnail fileset_id: 5dd5cc5e-9479-461f-92ee-8ba50ebc63ec filename: s41586-024-08227-w.pdf