Fig. 1
From: Enhancing and controlling valley magnetic response in MoS2/WS2 heterostructures by all-optical route

Characterization for vertically stacked MoS2/WS2 heterostructures. a Optical image of hetero-bilayer MoS2/WS2. b Surface morphology illustrated by AFM image. c, d Room temperature Raman and PL spectra for monolayer WS2, MoS2/WS2, and MoS2 respectively