Author:
Alfrey Adam,Hipsley Blake,Liu Chenxi,Deng Hui,Cundiff Steven T.
Abstract
Atomically-thin semiconductors host strongly-correlated states due to the reduced Coulombic screening. Using double-quantum coherent spectroscopy, we observe interacting doubly-excited exciton states in monolayer MoSe2. Electrostatically injected electrons are observed to screen long-range interactions.