Giant ferroelectric polarization in a bilayer graphene heterostructure oleh Ruirui Niu, Zhuoxian Li, Xiangyan Han, Zhuangzhuang Qu, Dongdong Ding, Zhiyu Wang, Qianling Liu, Tianyao Liu, Chunrui Han, Kenji Watanabe, Takashi Taniguchi, Menghao Wu, Qi Ren, Xueyun Wang, Jiawang Hong, Jinhai Mao, Zheng Han, Kaihui Liu, Zizhao Gan, Jianming Lu