We experimentally demonstrate time-resolved exciton propagation in a monolayer
semiconductor at cryogenic temperatures. Monitoring phonon-assisted recombination of …

Transport phenomena like diffusion, convection, and drift play key roles in the sciences and
engineering disciplines. They belong to the most omnipresent and important phenomena in …

Monolayer transition metal dichalcogenides (TMDCs) are promising materials for next
generation optoelectronic devices. The exciton diffusion length is a critical parameter that …

Tightly bound excitons in monolayer semiconductors represent a versatile platform to study
two-dimensional propagation of neutral quasiparticles. Their intrinsic properties, however …

Atomically thin semiconductors such as monolayer MoS2 and WS2 exhibit nonlinear exciton–
exciton annihilation at notably low excitation densities (below∼ 10 excitons/μm2 in …

We study theoretically weak localization of excitons in atomically thin transition metal
dichalcogenides. The constructive interference of excitonic de Broglie waves on the …

Using heterodyne transient grating spectroscopy, we observe a significant enhancement of
exciton diffusion in a monolayer WSe2 stacked on graphene. The diffusion dynamics can be …

Exciton valley Hall effect is the spatial separation of the valley-tagged excitons by a drag
force. Usually, the effect is associated with the anomalous velocity acquired by the particles …

We theoretically study the contribution of quantum effects to the exciton diffusion coefficient
in atomically thin crystals. It is related to the weak localization caused by the interference of …

We investigate the diffusion process of negatively charged excitons (trions) in a W Se 2
transition-metal dichalcogenide monolayer. We measure the time-resolved …