Graphene bilayers with a twist

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 a...

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Vydáno v:Nature materials Ročník 19; číslo 12; s. 1265 - 1275
Hlavní autoři: Andrei, Eva Y., MacDonald, Allan H.
Médium: Journal Article
Jazyk:angličtina
Vydáno: London Nature Publishing Group UK 01.12.2020
Nature Publishing Group
Springer Nature - Nature Publishing Group
Témata:
639/766/119
639/925
639/925/918
Bilayers
Biomaterials
Carrier density
Chemistry and Materials Science
Condensed Matter Physics
Correlation
Environmental factors
Fermi liquids
Graphene
Low temperature
Magnetism
MATERIALS SCIENCE
Nanoscience and technology
Nanotechnology
Optical and Electronic Materials
Questions
Review Article
Superconductivity
ISSN:1476-1122, 1476-4660, 1476-4660
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Popis
Shrnutí: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. Magic-angle twisted bilayer graphene plays host to many interesting phenomena, including superconductivity. This Review highlights key research results in the field, points toward important open questions, and comments on the place of magic-angle twisted bilayer graphene in the strongly correlated quantum matter world.
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USDOE Office of Science (SC), Basic Energy Sciences (BES)
FG02-99ER45742; FG02-02ER45958; TBF1473
Welch Foundation
ISSN:1476-1122
1476-4660
1476-4660
DOI:10.1038/s41563-020-00840-0