Abstract
Near a magic twist angle, bilayer graphene transforms from a weakly correlated Fermi liquid to a strongly correlated two-dimensional electron system with properties that are extraordinarily sensitive to carrier density and to controllable environmental factors such as the proximity of nearby gates and twist-angle variation. Among other phenomena, magic-angle twisted bilayer graphene hosts superconductivity, interaction-induced insulating states, magnetism, electronic nematicity, linear-in-temperature low-temperature resistivity and quantized anomalous Hall states. We highlight some key research results in this field, point to important questions that remain open and comment on the place of magic-angle twisted bilayer graphene in the strongly correlated quantum matter world.
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Change history
05 January 2021
A Correction to this paper has been published: https://doi.org/10.1038/s41563-020-00917-w.
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Acknowledgements
E.Y.A. acknowledges support from DOE (DOE-FG02-99ER45742) and the Gordon and Betty Moore Foundation (GBMF9453). A.H.M. acknowledges support from DOE BES grant DE- FG02-02ER45958 and from Welch Foundation grant TBF1473.
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Andrei, E.Y., MacDonald, A.H. Graphene bilayers with a twist. Nat. Mater. 19, 1265–1275 (2020). https://doi.org/10.1038/s41563-020-00840-0
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DOI: https://doi.org/10.1038/s41563-020-00840-0
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