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Van Hove Singularities: Observation of Electrically Tunable van Hove Singularities in Twisted Bilayer Graphene from NanoARPES (Adv. Mater. 31/2020)
Author(s) -
Jones Alfred J. H.,
Muzzio Ryan,
Majchrzak Paulina,
Pakdel Sahar,
Curcio Davide,
Volckaert Klara,
Biswas Deepnarayan,
Gobbo Jacob,
Singh Simranjeet,
Robinson Jeremy T.,
Watanabe Kenji,
Taniguchi Takashi,
Kim Timur K.,
Cacho Cephise,
Lanata Nicola,
Miwa Jill A.,
Hofmann Philip,
Katoch Jyoti,
Ulstrup Søren
Publication year - 2020
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202070230
Subject(s) - van hove singularity , bilayer graphene , condensed matter physics , materials science , gravitational singularity , doping , singularity , graphene , bilayer , dirac (video compression format) , angle resolved photoemission spectroscopy , superlattice , physics , nanotechnology , electronic structure , quantum mechanics , fermi level , membrane , geometry , chemistry , biochemistry , mathematics , neutrino , electron
In article number 2001656, Jyoti Katoch, Søran Ulstrup, and co‐workers apply nanoscale angle‐resolved photoemission (nanoARPES) to measure the superlattice van Hove singularity formed by the Dirac cones of twisted bilayer graphene. The photoemission experiment is performed on a device architecture that permits electrostatic tuning of the doping level, revealing the doping dependence of the singularity over a wide energy range.