[21p-A202-1~9] New trend in two-dimensional materials research created by the interaction of light and matter

4:45 PM - 5:15 PM JST(7:45 AM - 8:15 AM UTC)

[21p-A202-7] Optical Science of Moiré Excitons in Twisted Two-Dimensional Heterostructures

〇Keisuke Shinokita¹ (1.IAE, Kyoto Univ.)

Keywords:

two dimensional semiconductors,van der Waals heterostructures,moire excitons

Monolayer transition metal dichalcogenides (TMDCs) exhibit unique physical properties from their extremely low-dimensional nature, making them ideal materials for studying fundamental physics in two-dimensional systems. Furthermore, the Moiré patterns that arise from the periodic atomic arrangements in vertically stacked multiple monolayer TMDCs enable zero-dimensional localization (Moiré excitons) and high tunability of excitons due to the in-plane confinement potential.In this study, we investigated the optical characteristics of WSe2/MoSe2 bilayers within the Moiré potential to elucidate the excitonic states. We observed the zero-dimensional response of excitons confined by the Moiré potential and unique optical responses originating from the exciton fine structure within the potential.