Valley dynamics probed through charged and neutral exciton emission in monolayer WSe2

Optical interband transitions in monolayer transition metal dichalcogenides such as ${\mathrm{WSe}}_{2}$ and ${\mathrm{MoS}}_{2}$ are governed by chiral selection rules. This allows efficient optical initialization of an electron in a specific K valley in momentum space. Here we probe the valley dyn... View More