AbstractSource data of manuscript "Observation of flat bands in twisted bilayer graphene" by Simone Lisi et al. published in Nature Physics

A. de Jong, Tobias

Allan, Milan

Barinov, Alexei

Baumberger, Felix

Benschop, Tjerk

Cappelli, Edoardo

Cucchi, Irene

Duran, Jose R.

Efetov, Dimitri K.

Giampietri, Alessio

Hunter, Andrew

Jobst, Johannes

Kandyba, Viktor

Leeuwenhoek, Marteen

Lisi, Simone

Lu, Xiaobo

Margot, Florian

Rademaker, Louk

Stalman, Vincent

Stepanov, Petr

Tamai, Anna

Taniguchi, Takashi

van der Molen, Sense Jan

Watanabe, Kenji

Transport experiments in twisted bilayer graphene haverevealed multiple superconducting domes separated by cor-related insulating states 1–5 . These properties are generallyassociated with strongly correlated states in a flat mini-bandof the hexagonal moiré superlattice as was predicted by bandstructure calculations 6–8 . Evidence for the existence of a flatband comes from local tunnelling spectroscopy 9–13 and elec-tronic compressibility measurements 14 , which report two ormore sharp peaks in the density of states that may be asso-ciated with closely spaced Van Hove singularities. However,direct momentum-resolved measurements have proved to bechallenging 15 . Here, we combine different imaging techniquesand angle-resolved photoemission with simultaneous real- andmomentum-space resolution (nano-ARPES) to directly mapthe band dispersion in twisted bilayer graphene devices nearcharge neutrality. Our experiments reveal large areas with ahomogeneous twist angle that support a flat band with a spec-tral weight that is highly localized in momentum space. The flatband is separated from the dispersive Dirac bands, which showmultiple moiré hybridization gaps. These data establish thesalient features of the twisted bilayer graphene band structure.Quantum Matter and Optic

Lisi, S.

Lu, X.

Benschop, T.

Jong, T.A. de

Stepanov, P.

Duren, J.R.

Margot, F.

Cucchi, I.

Cappelli, E.

Hunter, A.

Tamai, A.

Kandyba, V.

Giampietri, A.

Barinov, A.

Jobst, J.

Stalman, V.

Leeuwenhoek, M.

Watanabe, K.

Taniguchi, T.

Rademaker, L.

Molen, S.J. van der

Allan, M.P.

Efetov, D.K.

Baumberger, F.

Leiden University Scholary Publications

Observation of flat bands in twisted bilayer graphene

https://scholarlypublications.universiteitleiden.nl/access/item%3A3185541/download

Observation of flat bands in twisted bilayer graphene (source data)

Observation of flat bands in twisted bilayer graphene (source data)

Abstract

Similar works

Full text

Available Versions

Leiden University Scholary Publications