Moiré Heterostructures

Twisted transition metal dichalcogenides heterostructures provide a platform for studying strong electron interactions since flat bands can be introduced by the moiré pattern in a system. Dozens of correlated insulating states have been observed in transition metal dichalcogenide moiré heterostructures. Here, we will present transport and capacitance measurements in bilayer WSe₂/WS₂ structures. The density of the two layers in natural bilayer WSe2 can be controlled independently in a dual gate device. Therefore, a two-component moiré system could be established in such structures which might give rise to interesting phenomenon such as exciton condensate in zero field.