Danjie Dai, Bowen Fu, Jingnan Yang, Longlong Yang, Sai Yan, Xiqing Chen, Hancong Li, Zhanchun Zuo, Can Wang, Kuijuan Jin, Qihuang Gong, Xiulai Xu
The twist engineering of moiré superlattice in van der Waals heterostructures of transition metal dichalcogenides can manipulate valley physics of interlayer excitons (IXs), paving the way for next-generation valleytronic devices. However, the twist angle-dependent control of excitonic potential on valley polarization is not investigated so far in electrically controlled heterostructures and the physical mechanism underneath needs to be explored. Here, we demonstrate the dependence of both polarization switching and degree of valley polarization on the moiré period...
May 17, 2024: Science Advances