Ultrafast Optical Control of Exciton Diffusion in WSe${}_2$/Graphene Heterostructures Revealed by Heterodyne Transient Grating Spectroscopy

Lukas Rieland, Julian Wagner, Robin Bernhardt +8

Using heterodyne transient grating spectroscopy, we observe a significant enhancement of exciton diffusion within a monolayer WSe${}_2$ stacked on top of graphene. We further demonst…