Abstract The Computational 2D Materials Database (C2DB) is a highly curated open
database organising a wealth of computed properties for more than 4000 atomically thin two …

Thouless pumping provides one of the simplest manifestations of topology in quantum
systems and has attracted a lot of recent interest, both theoretically and experimentally …

The accuracy and efficiency of electronic-structure methods to understand, predict and
design the properties of materials has driven a new paradigm in research. Simulations can …

Over the past twenty-five years, mathematical concepts associated with geometric phases
have come to occupy a central place in our modern understanding of the physics of …

In the presence of crystalline symmetries, certain topological insulators present a filling
anomaly: a mismatch between the number of electrons in an energy band and the number of …

Two-dimensional (2D) ferroelectrics, which are rare in nature, enable high-density
nonvolatile memory with low energy consumption. Here, we propose a theory of bilayer …

We extend the theory of dipole moments in crystalline insulators to higher multipole
moments. As first formulated in Benalcazar et al.[Science 357, 61 (2017) SCIEAS 0036-8075 …

Whenever a quantum system undergoes a cyclic evolution governed by a slow change of
parameters, it acquires a phase factor: the geometric phase. Its most common formulations …

Motivated by the recent observation of an anomalous Hall effect in twisted bilayer graphene,
we use a lowest Landau level model to understand the origin of the underlying symmetry …

After twenty years of partly quiet and ten years of partly enthusiastic research into lead-free
piezoceramics there are now clear prospects for transfer into applications in some areas …