Helical edge states and fractional quantum Hall effect in a graphene electron-hole bilayer.

@article{SanchezYamagishi2017HelicalES,
  title={Helical edge states and fractional quantum Hall effect in a graphene electron-hole bilayer.},
  author={Javier D Sanchez-Yamagishi and Jason Y Luo and Andrea F. Young and Benjamin M. Hunt and Kenji Watanabe and Takashi Taniguchi and Raymond C. Ashoori and Pablo Jarillo-Herrero},
  journal={Nature nanotechnology},
  year={2017},
  volume={12 2},
  pages={
          118-122
        }
}
Helical 1D electronic systems are a promising route towards realizing circuits of topological quantum states that exhibit non-Abelian statistics. Here, we demonstrate a versatile platform to realize 1D systems made by combining quantum Hall (QH) edge states of opposite chiralities in a graphene electron-hole bilayer at moderate magnetic fields. Using this approach, we engineer helical 1D edge conductors where the counterpropagating modes are localized in separate electron and hole layers by a… Expand
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