Helical edge states and fractional quantum Hall effect in a graphene electron–hole bilayer (Helical Edge States and Fractional Quantum Hall Effect in a Graphene Electron-hole Bilayer)
Javier D. Sanchez-Yamagishi, Jason Y. Luo, Andrea F. Young, Benjamin M. Hunt, Kenji Watanabe, Takashi Taniguchi, Raymond C. Ashoori, Pablo Jarillo-Herrero.