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 …

Magnetism typically arises from the joint effect of Fermi statistics and repulsive Coulomb
interactions, which favours ground states with non-zero electron spin. As a result, controlling …

Twisted van der Waals heterostructures with flat electronic bands have recently emerged as
a platform for realizing correlated and topological states with a high degree of control and …

Electrons in moiré flat band systems can spontaneously break time-reversal symmetry,
giving rise to a quantized anomalous Hall effect. In this study, we use a superconducting …

We analyze density wave and Pomeranchuk orders in twisted bilayer graphene. This
complements our earlier analysis of the pairing instabilities. We assume that near half filling …

The flat bands resulting from moiré superlattices exhibit fascinating correlated electron
phenomena such as correlated insulators,(Nature 2018, 556 (7699), 80–84),(Nature Physics …

Many experiments in twisted bilayer graphene (TBG) differ from each other in terms of the
details of their phase diagrams. Few controllable aspects aside, this discrepancy is largely …

We show that the insulating states of magic-angle twisted bilayer graphene support a series
of collective modes corresponding to local particle-hole excitations on triangular lattice sites …

Graphene multilayers with flat moiré minibands can exhibit the quantized anomalous Hall
effect due to the combined influence of spontaneous valley polarization and topologically …

It is observed experimentally that the sign of the Hall resistance can be flipped by a dc
electric current in the twisted bilayer graphene (TBG) at 3/4 filling of the fourfold degenerate …