Stacking single layers of atoms on top of each other provides a fundamental way to achieve
novel material systems and engineer their physical properties, which offers opportunities for …

Propagation of light-emitting quasiparticles is of central importance across the fields of
condensed matter physics and nanomaterials science. We experimentally demonstrate …

In the archetypal monolayer semiconductor WSe 2, the distinct ordering of spin-polarized
valleys (low-energy pockets) in the conduction band allows for studies of not only simple …

The growing field of quantum information technology requires propagation of information
over long distances with efficient readout mechanisms. Excitonic quantum fluids have …

Chemical vapor deposition (CVD) allows lateral edge epitaxy of transition metal
dichalcogenide heterostructures. Critical for carrier and exciton transport is the material …

Achieving robust and electrically controlled valley polarization in monolayer transition metal
dichalcogenides (ML-TMDs) is a frontier challenge for realistic valleytronic applications …

The electron-hole exchange interaction is a fundamental mechanism that drives valley
depolarization via intervalley exciton hopping in semiconductor multivalley systems. Here …

Metasurfaces allow light to be manipulated at the nanoscale. Integrating metasurfaces with
transition metal dichalcogenide monolayers provides additional functionality to ultrathin …

For the past few years, two-dimensional (2D) ferroelectric materials have attracted strong
interest for their potential in future nanoelectronics devices. The recent discovery of 2D …

The variety of excitonic states in tungsten-based dichalcogenide monolayers stems from
unique interplay between the spin and valley degrees of freedom. One of the exciton …