Author(s): Zhibin Su, Junjian Mi, Shaohua Yan, Jiade Li, Siwei Xue, Zhiyu Tao, Enling Wang, Xiongfei Shi, Hechang Lei, Zhuan Xu, Jiandong Guo, and Xuetao Zhu
High-resolution electron scattering confirms the dimensional transition of exciton dispersion from parabolic (3D) to massless linear (2D) behavior near the Brillouin zone center.
[Phys. Rev. Lett. 136, 106502] Published Tue Mar 10, 2026