The physics of quantum materials is dictated by many-body interactions and mathematical
concepts such as symmetry and topology that have transformed our understanding of matter …

Angle-resolved photoemission spectroscopy (ARPES), with its exceptional sensitivity to both
the binding energy and the momentum of valence electrons in solids, provides unparalleled …

Resolving momentum degrees of freedom of excitons, which are electron-hole pairs bound
by the Coulomb attraction in a photoexcited semiconductor, has remained an elusive goal …

The pioneering exfoliation of monolayer tungsten diselenide has greatly inspired
researchers toward semiconducting applications. WSe2 belongs to a family of transition …

We develop an ab initio nonadiabatic molecular dynamics (NAMD) method based on GW
plus real-time Bethe-Salpeter equation (GW+ rtBSE-NAMD) for the spin-resolved exciton …

Monolayer transition metal dichalcogenides (TMDs) exhibit a remarkably strong Coulomb
interaction that manifests in tightly bound excitons. Due to the complex electronic band …

A key feature of monolayer semiconductors, such as transition-metal dichalcogenides, is the
poorly screened Coulomb potential, which leads to a large exciton binding energy (E b) and …

In halide hybrid organic–inorganic perovskites (HOPs), spin–orbit coupling (SOC) presents
a well-documented large influence on band structure. However, SOC may also present more …

The twist degree of freedom provides a powerful new tool for engineering the electrical and
optical properties of van der Waals heterostructures. Here, we show that the twist angle can …

When electron-hole pairs are excited in a semiconductor, it is a priori not clear if they form a
plasma of unbound fermionic particles or a gas of composite bosons called excitons …