Helical quantum Hall phase in graphene on SrTiO3

@article{Veyrat2019HelicalQH,
  title={Helical quantum Hall phase in graphene on SrTiO3},
  author={Louis Veyrat and Corentin D{\'e}prez and Alexis Coissard and Xiaoxi Li and Fr{\'e}d{\'e}ric Gay and Kenji Watanabe and Takashi Taniguchi and Zheng Vitto Han and Benjamin A. Piot and Hermann Sellier and Benjamin Sac'ep'e},
  journal={Science},
  year={2019},
  volume={367},
  pages={781 - 786}
}
Controlling the interactions Near charge neutrality and subject to perpendicular magnetic fields, graphene is expected to become a ferromagnet with edge states not unlike those in two-dimensional topological insulators. Observing this effect experimentally has proven tricky because very large magnetic fields are needed to overcome the effect of electron-electron interactions, which drive the system to competing states. Instead of amping up the field, Veyrat et al. placed their graphene samples… 

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