Nature Communications (Oct 2022)

Giant ferroelectric polarization in a bilayer graphene heterostructure

  • 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

DOI
https://doi.org/10.1038/s41467-022-34104-z
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 8

Abstract

Read online

Interfacial ferroelectricity may emerge in moiré superlattices. Here, the authors find that the polarized charge is much larger than the capacity of the moiré miniband and the associated anomalous screening exists outside the band.