Graphene bilayers with a twist

Nature Materials
Eva Y Andrei, A H MacDonald

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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Citations

Mar 27, 2021·ACS Nano·Feng HeYaguo Wang
Mar 31, 2021·Nature Nanotechnology·Alexey Y Nikitin
Jun 22, 2021·Physical Review Letters·Kaichen DongJie Yao
Aug 18, 2021·Nature Nanotechnology·Kosmas L Tsakmakidis
Sep 3, 2021·ACS Central Science·Mekhola SinhaTyrel M McQueen
Sep 11, 2021·ACS Nano·Bradley J RyanMatthew G Panthani
Oct 7, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Amrit KumarR K Gupta
Nov 2, 2021·Advanced Science·Mengya LiuGui Yu
Nov 17, 2021·Nano Letters·Nishchay SuriDi Xiao

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Methods Mentioned

BETA
scanning tunnelling spectroscopy
atomic force microscopy
electron diffraction

Software Mentioned

MATBG

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