Electric-field control of the nucleation and motion of isolated three-fold polar vertices

Mingqiang Li, Tiannan Yang, Pan Chen, Yongjun Wang, Ruixue Zhu, Xiaomei Li, Ruochen Shi, Heng Jui Liu, Yen Lin Huang, Xiumei Ma, Jingmin Zhang, Xuedong Bai, Long Qing Chen, Ying Hao Chu, Peng Gao^*