… excitonic quantum criticality: (1) a weakly interacting graphene bilayer, and (2) a system of
two narrow… several potential realizations of excitonic quantum criticality in 2D Van der Waals …

… narrow bands and strong interactions arise near a magic angle (MA) ∼ 1.08◦ given by a
resonance condition between layer-hybridisation and twistinduced band… and excitonic instability …

… We study a family of excitonic quantum phase transitions describing the evolution … excitonic
quantum criticality: (1) a weakly interacting graphene bilayer, and (2) a system of two narrow, …

… bilayer WSe 2 (tWSe 2 ) at small twist angles. We demonstrated multiple topological
bands that host a series of Chern … -two moiré valence bands are well described by a tight-binding …

… Zeeman effect can reduce the moiré band gap in one valley and eventually un-invert the …
We used a light-emitting diode with a centre wavelength near 730 nm to probe the excitonic …

… In this state, the first Chern band in both valleys is fully occupied and we can … reduce the
intervalley repulsion. Therefore, we propose that the second possibility with intervalley exciton …

… of the six bands in the presence of the excitonic condensate (… of a quantum criticality towards
the formation of an excitonic … and valley chern number in twisted double-bilayer graphene, …

… recently observed phases of Bernal bilayer graphene (28, 29). … electronic properties and
quantum criticality that had been the … to the superfluid weight (150) or excitonic effects (18). It will …

… reduce the band offset in the heterobilayer and induce band … The first three moiré bands with
a total Chern number of 0 … as twisted bilayer graphene [51] to study correlated states [52,53]. …

… systems open up for Kondo-destruction quantum criticality. … We start from the effective
tight-binding model on a hexagonal … -MacDonald model for twisted bilayer graphene, we can also …