--- _id: '10725' abstract: - lang: eng text: Bilayer graphene with ~ 1.1 degrees twist mismatch between the layers hosts a low energy flat band in which the Coulomb interaction is large relative to the bandwidth, promoting correlated insulating states at half band filling, and superconducting (SC) phases with dome-like structure neighboring correlated insulating states. Here we show measurements of a dual-graphite-gated twisted bilayer graphene device, which minimizes charge inhomogeneity. We observe new correlated phases, including for the first time a SC pocket near half-filling of the electron-doped band and resistive states at quarter-filling of both bands that emerge in a magnetic field. Changing the layer polarization with vertical electric field reveals an unexpected competition between SC and correlated insulator phases, which we interpret to result from differences in disorder of each graphene layer and underscores the spatial inhomogeneity like twist angle as a significant source of disorder in these devices [1]. alternative_title: - Bulletin of the American Physical Society article_number: R14.00004 article_processing_charge: No author: - first_name: Shaowen full_name: Chen, Shaowen last_name: Chen - first_name: Matthew full_name: Yankowitz, Matthew last_name: Yankowitz - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Kenji full_name: Watanabe, Kenji last_name: Watanabe - first_name: Takashi full_name: Taniguchi, Takashi last_name: Taniguchi - first_name: David E. full_name: Graf, David E. last_name: Graf - first_name: Andrea full_name: Young, Andrea last_name: Young - first_name: Cory R. full_name: Dean, Cory R. last_name: Dean citation: ama: 'Chen S, Yankowitz M, Polshyn H, et al. Correlated insulating and superconducting phases in twisted bilayer graphene. In: APS March Meeting 2019. Vol 64. American Physical Society; 2019.' apa: 'Chen, S., Yankowitz, M., Polshyn, H., Watanabe, K., Taniguchi, T., Graf, D. E., … Dean, C. R. (2019). Correlated insulating and superconducting phases in twisted bilayer graphene. In APS March Meeting 2019 (Vol. 64). Boston, MA, United States: American Physical Society.' chicago: Chen, Shaowen, Matthew Yankowitz, Hryhoriy Polshyn, Kenji Watanabe, Takashi Taniguchi, David E. Graf, Andrea Young, and Cory R. Dean. “Correlated Insulating and Superconducting Phases in Twisted Bilayer Graphene.” In APS March Meeting 2019, Vol. 64. American Physical Society, 2019. ieee: S. Chen et al., “Correlated insulating and superconducting phases in twisted bilayer graphene,” in APS March Meeting 2019, Boston, MA, United States, 2019, vol. 64, no. 2. ista: 'Chen S, Yankowitz M, Polshyn H, Watanabe K, Taniguchi T, Graf DE, Young A, Dean CR. 2019. Correlated insulating and superconducting phases in twisted bilayer graphene. APS March Meeting 2019. APS: American Physical Society, Bulletin of the American Physical Society, vol. 64, R14.00004.' mla: Chen, Shaowen, et al. “Correlated Insulating and Superconducting Phases in Twisted Bilayer Graphene.” APS March Meeting 2019, vol. 64, no. 2, R14.00004, American Physical Society, 2019. short: S. Chen, M. Yankowitz, H. Polshyn, K. Watanabe, T. Taniguchi, D.E. Graf, A. Young, C.R. Dean, in:, APS March Meeting 2019, American Physical Society, 2019. conference: end_date: 2019-03-08 location: Boston, MA, United States name: 'APS: American Physical Society' start_date: 2019-03-04 date_created: 2022-02-04T13:48:04Z date_published: 2019-03-01T00:00:00Z date_updated: 2022-02-08T10:24:13Z day: '01' extern: '1' intvolume: ' 64' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://meetings.aps.org/Meeting/MAR19/Session/R14.4 month: '03' oa: 1 oa_version: Published Version publication: APS March Meeting 2019 publication_identifier: issn: - 0003-0503 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - relation: used_in_publication url: https://arxiv.org/abs/1808.07865 status: public title: Correlated insulating and superconducting phases in twisted bilayer graphene type: conference user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 64 year: '2019' ...