Twisted graphene-based homo-and heterostructures, consisting of two-dimensional (2D)
layered materials with a twist angle (θ), have attracted growing interest due to their unique …

Electronic correlations in two-dimensional materials play a crucial role in stabilising
emergent phases of matter. The realisation of correlation-driven phenomena in graphene …

When twisted to angles near 1°, graphene multilayers provide a window on electron
correlation physics. Here, we report the discovery of a correlated electron-hole state in …

We have previously reported ferromagnetism evinced by a large hysteretic anomalous Hall
effect in twisted bilayer graphene (tBLG). Subsequent measurements of a quantized Hall …

Graphene-based moiré systems have attracted considerable interest in recent years as they
display a remarkable variety of correlated phenomena. Besides insulating and …

Charge-neutral conducting systems represent a class of materials with unusual properties
governed by electron-hole (eh) interactions. Depending on the quasiparticle statistics, band …

A unique feature of the complex band structures of moiré materials is the presence of
minivalleys, their hybridization, and scattering between them. Here, we investigate …

Excitons, pairs of electrons and holes, undergo a Bose-Einstein condensation at low
temperatures. An important platform to study excitons is double-layer two-dimensional …

Twisted bilayer graphene (TBG) provides an example of a system in which the interplay of
interlayer interactions and superlattice structure impacts electron transport in a variety of …

We use a hybrid k· p-theory–tight-binding (HkpTB) model to describe interlayer coupling
simultaneously in both Bernal and twisted graphene structures. For Bernal-aligned …