Optical Read-Out of Coulomb Staircases in a Moiré Superlattice via Trapped Interlayer Trions

Optical read-out of Coulomb staircases in a moiré superlattice via trapped interlayer trions

Moiré patterns with a superlattice potential can be formed by vertically stacking two layered materials with a relative twist or lattice constant mismatch. In transition metal dichalcogenide-based systems, the moiré potential landscape can trap interlayer excitons (IXs) at specific atomic registries. Here, we report that spatially isolated trapped IXs in a molybdenum diselenide/tungsten diselenide heterobilayer device provide a sensitive optical…

Droplets Of Three Electrons Behave Like A Liquid - Data Intelligence

Electrons repel each other strongly through the Coulomb interaction, which acts between all charged particles. In a system of many electrons, these interactions can create a liquid-like phase, called a Coulomb liquid. In a paper in Nature, Shaju et al.1 bridge the gap between the Coulomb interactions in single pairs of electrons and the emergence of the Coulomb liquid, finding evidence that a ‘droplet’ of just three electrons shows the character…