REVIEW 8 cited by
Imaging Electronic Correlations in Twisted Bilayer Graphene near the Magic Angle
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
read the original abstract
Twisted bilayer graphene with a twist angle of around 1.1{\deg} features a pair of isolated flat electronic bands and forms a strongly correlated electronic platform. Here, we use scanning tunneling microscopy to probe local properties of highly tunable twisted bilayer graphene devices and show that the flat bands strongly deform when aligned with the Fermi level. At half filling of the bands, we observe the development of gaps originating from correlated insulating states. Near charge neutrality, we find a previously unidentified correlated regime featuring a substantially enhanced flat band splitting that we describe within a microscopic model predicting a strong tendency towards nematic ordering. Our results provide insights into symmetry breaking correlation effects and highlight the importance of electronic interactions for all filling factors in twisted bilayer graphene.
Forward citations
Cited by 8 Pith papers
-
Mapping the twist angle and unconventional Landau levels in magic angle graphene
Local twist-angle maps in magic-angle twisted bilayer graphene reveal 0.1-degree variations and gradients that generate unscreened electric fields and bulk quantum Hall edge states.
-
Disorder in Twisted Bilayer Graphene
Twist-angle disorder in twisted bilayer graphene fills in miniband gaps and broadens the miniband, while leaving the Dirac cone velocity almost unchanged.
-
Emerging network model in a twisted monolayer-rhombohedral graphene
In twisted monolayer–rhombohedral graphene, a realistic parameter regime hosts coexisting nearly flat localized states and quasi-1D propagating modes, forming a hybrid electronic network.
-
Electronic states at twist stacking faults in rhombohedral graphite
In the chiral limit, twist stacking faults in rhombohedral graphite host nearly flat bands whose total Chern number decreases with disorder strength and eventually vanishes.
-
Scanning tunneling microscope characterizations of a circular graphene resonator realized with p-p junctions
A circular p-p junction in graphene confines Dirac fermions into whispering-gallery modes, shows a Berry-phase-induced level jump under magnetic field, and exhibits a split quasi-bound state near the Fermi level.
-
Collective Excitations of Quantum Anomalous Hall Ferromagnets in Twisted Bilayer Graphene
A microscopic calculation shows that the quantum anomalous Hall ferromagnet in twisted bilayer graphene is stable against spin and valley magnons, and that valley wave fluctuations limit the ordering temperature.
-
Flat Chern Band From Twisted Bilayer MnBi$_2$Te$_4$
A twisted bilayer of MnBi2Te4 is predicted to host an isolated flat Chern band at about one degree twist, offering a time-reversal-broken moire platform for correlated topological states.
-
Effects of Defects in Superconducting Phase of Twisted Bilayer Graphene
Impurity-induced bound-state counts and disorder phase diagrams are computed for s-wave, d+id, and p+ip pairing in twisted bilayer graphene models, yielding a proposed STM diagnostic for pairing symmetry.
Discussion (0). Continue with ORCID to comment.