# Direct View of Gate-Tunable Miniband Dispersion in Graphene Superlattices Near the Magic Twist Angle https://mdr.nims.go.jp/datasets/45ab01d0-2286-400f-a09b-f7c44b158e9e ## File - [jiang-et-al-2025-direct-view-of-gate-tunable-miniband-dispersion-in-graphene-superlattices-near-the-magic-twist-angle.pdf](https://mdr.nims.go.jp/filesets/f307da43-a5de-4694-bcbb-f8df4d496b7e/download) ([Detail](https://mdr.nims.go.jp/filesets/f307da43-a5de-4694-bcbb-f8df4d496b7e.md)) ## Id 45ab01d0-2286-400f-a09b-f7c44b158e9e ## Local identifier ## Visibility open_to_public ## State published ## Created at 2025-02-04T05:24:09.405419Z ## Updated at 2025-02-05T03:30:18.012381Z ## Published at 2025-02-05T03:30:18.405033Z ## Doi ## First published url https://doi.org/10.1021/acsnano.4c12905 ## Date published 2025-01-21 ## Recorded date published 2025-1-21 ## Resource type journal_article ## Manuscript type vor ## Collection ## Title - title: Direct View of Gate-Tunable Miniband Dispersion in Graphene Superlattices Near the Magic Twist Angle title_type: original lang: en ## Description - description: "Superlattices from twisted graphene mono- and bilayer systems give rise to on-demand many-body states such as Mott insulators and unconventional superconductors. These phenomena are ascribed to a combination of flat bands and strong Coulomb interactions. However, a comprehensive understanding is lacking because the low-energy band structure strongly changes when an electric field is applied to vary the\r\nelectron filling. Here, we gain direct access to the filling- dependent low-energy bands of twisted bilayer graphene (TBG)\r\nand twisted double bilayer graphene (TDBG) by applying\r\nmicrofocused angle-resolved photoemission spectroscopy to in\r\nsitu gated devices. Our findings for the two systems are in stark\r\ncontrast: the doping-dependent dispersion for TBG can be\r\ndescribed in a simple model, combining a filling-dependent rigid band shift with a many-body-related bandwidth change. In TDBG, on the other hand, we find a complex behavior of the low-energy bands, combining nonmonotonous bandwidth changes and tunable gap openings, which depend on the gate-induced displacement field. Our work establishes the extent of electric field tunability of the low-energy electronic states in twisted graphene superlattices and can serve to underpin the theoretical understanding of the resulting phenomena." description_type: abstract lang: und ## Creator - name: Zhihao Jiang role: author orcid: https://orcid.org/0000-0002-4203-1062 - name: Dongkyu Lee role: author - name: Alfred J. H. Jones role: author orcid: https://orcid.org/0000-0002-7930-0967 - name: Youngju Park role: author - name: Kimberly Hsieh role: author - name: Paulina Majchrzak role: author - name: Chakradhar Sahoo role: author - name: Thomas S. Nielsen role: author - name: Kenji Watanabe role: author orcid: https://orcid.org/0000-0003-3701-8119 organization: National Institute for Materials Science ror: https://ror.org/026v1ze26 - name: Takashi Taniguchi role: author orcid: https://orcid.org/0000-0002-1467-3105 organization: National Institute for Materials Science ror: https://ror.org/026v1ze26 - name: Philip Hofmann role: author - name: Jill A. Miwa role: author - name: Yong P. Chen role: author - name: Jeil Jung role: author orcid: https://orcid.org/0000-0003-2523-0905 - name: Søren Ulstrup role: author orcid: https://orcid.org/0000-0001-5922-4488 ## Contact agent ## Publisher organization: American Chemical Society (ACS) ## Managing organization ## Keyword - subject: Twisted graphene schema: not_defined - subject: low-energy bands schema: not_defined - subject: photoemission spectroscopy schema: not_defined ## Rights - identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/ ## Other identifier(s) ## Data origin - data_origin_type: other ## Embargo ## Journal - title: ACS Nano issn: '19360851' volume: '19' issue: '2' start_page: 2379 end_page: 2387 ## Conference ## Related item ## Funding - identifier: DFF-9064-00057B funder_name: Det Frie Forskningsr??d - identifier: NNF22OC0079960 funder_name: Novo Nordisk Fonden - identifier: '101059528' funder_name: HORIZON EUROPE Marie Sklodowska-Curie Actions - funder_name: Aarhus Universitets Forskningsfond - identifier: KSC-2022-CRE-0514 funder_name: Korea Institute of Science and Technology Information - identifier: '25931' funder_name: Villum Fonden - identifier: 21H05233 funder_name: Ministry of Education, Culture, Sports, Science and Technology - identifier: 23H02052 funder_name: Ministry of Education, Culture, Sports, Science and Technology - funder_name: Ministry of Land, Infrastructure and Transport - funder_name: Ministry of Education, Culture, Sports, Science and Technology - identifier: NRF2020R1A5A1016518 funder_name: National Research Foundation of Korea - identifier: DFF-1026-00089B funder_name: Det Frie Forskningsr??d - identifier: DFF-6108-00409 funder_name: Det Frie Forskningsr??d ## 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: f307da43-a5de-4694-bcbb-f8df4d496b7e filename: jiang-et-al-2025-direct-view-of-gate-tunable-miniband-dispersion-in-graphene-superlattices-near-the-magic-twist-angle.pdf content_type: application/pdf size: 6485218 md5: 31da5bd798d83913691a7cd150cdc3b4 ## Thumbnail fileset_id: f307da43-a5de-4694-bcbb-f8df4d496b7e filename: jiang-et-al-2025-direct-view-of-gate-tunable-miniband-dispersion-in-graphene-superlattices-near-the-magic-twist-angle.pdf