Author(s): Zaizhe Zhang, Xi Chen, Kenji Watanabe, Takashi Taniguchi, Zhida Song, and Xiaobo Lu At an even filling, a rhombohedral octalayer graphene moiré superlattice with electric-field-tunable chirality hosts a robust Chern insulating state. [Phys. Rev. Lett. 137, 146505] Published Fri Oct 02, 2026