Sketch of an exciton-hole exchange interaction in a 2D semiconductor moiré superlattice.

From the article:

Moiré Exchange Effect in Twisted ${\mathrm{WSe}}_2/{\mathrm{WS}}_2$ Heterobilayer
Jiayi Zhu, Huiyuan Zheng, Xi Wang, Heonjoon Park, Chengxin Xiao, Yinong Zhang, Takashi Taniguchi, Kenji Watanabe, Jiaqiang Yan, Daniel R. Gamelin, Wang Yao, and Xiaodong Xu
Phys. Rev. Lett. 133, 086501 (2024)

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