[10a-N305-1~10] CS.8 Code-sharing Session of 4.5 & 17

▲ [10a-N305-10] Moiré exciton-phonon resonance in WSe₂/MoSe₂ heterobilayer

〇Keisuke Shinokita¹, Yuhei Miyauchi¹, Kenji Watanabe², Takashi Taniguchi³, Kazunari Matsuda¹ (1.Inst. of Adv. Energy, Kyoto Univ., 2.Research Center for Functional Materials, NIMS, 3.International Center for Materials Nanoarchitectonics, NIMS)

Keywords:van der Waals heterostructures, optical properties of moire excitons

Van der Waals heterostructures composed of transition metal dichalcogenides are a fascinating platform to engineer the optically generated excitonic properties through moiré patterns with angular mismatch towards novel quantum phenomena. The moiré pattern as a periodic trap potential can give rise to spatially ordered ensembles of zero-dimensional exciton (moiré exciton), which offers the possibility for dense coherent quantum emitters and quantum simulation of many-body physics. Here, we report the novel excitonic features of the moiré exciton in a twisted WSe₂/MoSe₂ heterobilayer based on near-resonant photoluminescence excitation (PLE) spectroscopy. The PL spectrum strongly depending on the excitation energy shows highly selective excitation of the moiré exciton at phonon resonances.