Controlling exciton diffusivity/ flow in moiré superlattices by leveraging interaction between electrons and excitons

https://phys.org/news/2025-12-exciton-moir-superlattices-method-leverages.html

"moiré superlattice: 2 layers dichalcogenides stacked with small rotational mismatch, creating periodic potential trapping electrons/ excitons, for easy charge-neutral exciton manipulation using electric fields... electrostatic doping (adjusting gate voltage) to change electron density radically alters how excitons move... when electrons dense forming Mott insulator, exciton diffusivity up to 100X greater... when electrons rigid/ Wigner crystal, exciton flow suppressed trapping energy... excitons, not electrons, as information carriers"