Strongly correlated systems can give rise to spectacular phenomenology, from high-
temperature superconductivity to the emergence of states of matter characterized by long …

When single layers of 2D materials are stacked on top of one another with a small twist in
orientation, the resulting structure often involves incommensurate moiré patterns. In these …

Magic-angle twisted bilayer graphene exhibits a variety of electronic states, including
correlated insulators,–, superconductors,–and topological phases,,. Understanding the …

Electron–electron interactions play an important role in graphene and related systems and
can induce exotic quantum states, especially in a stacked bilayer with a small twist angle …

The flat bands that appear in some twisted van der Waals heterostructures provide a setting
in which strong interactions between electrons lead to a variety of correlated …

Topological solitons, a class of stable nonlinear excitations, appear in diverse domains as in
the Skyrme model of nuclear forces. Here, we argue that similar excitations play an …

We report on a fully self-consistent Hartree-Fock calculation of interaction effects on the
moiré flat bands of twisted bilayer graphene, assuming that valley U (1) symmetry is …

We use the density matrix renormalization group (DMRG) to study the correlated electron
states favored by the Coulomb interaction projected onto the narrow bands of twisted bilayer …

We study the electronic structures and topological properties of (M+ N)-layer twisted
graphene systems. We consider the generic situation that N-layer graphene is placed on top …

We investigate twisted double bilayer graphene (TDBG), a four-layer system composed of
two AB-stacked graphene bilayers rotated with respect to each other by a small angle. Our …