Harmonic to anharmonic tuning of moiré potential leading to unconventional Stark effect and giant dipolar repulsion in WS${}_2$/WSe${}_2$ heterobilayer

Suman Chatterjee, Medha Dandu, Pushkar Dasika +6

Excitonic states trapped in harmonic moiré wells of twisted heterobilayers is an intriguing testbed. However, the moiré potential is primarily governed by the twist angle, and its…