Author(s): Kaijie Yang, Huiyuan Zheng, Xiaodong Xu, Di Xiao, and Ting Cao Berry curvature in twisted molybdenum ditelluride drives the oppositely charged particles in an exciton in opposite transverse directions, producing a dipole moment of approximately 150 Debye. [Phys. Rev. Lett. 137, 126602] Published Tue Sep 15, 2026