Valley-polarized quantum anomalous Hall phase in bilayer graphene with layer-dependent proximity effects

  title={Valley-polarized quantum anomalous Hall phase in bilayer graphene with layer-dependent proximity effects},
  author={Marc Vila and Jose H. Garcia and Stephan Roche},
  journal={Physical Review B},
Realizations of some topological phases in two-dimensional systems rely on the challenge of jointly incorporating spin-orbit and magnetic exchange interactions. Here, we predict the formation and control of a fully valley-polarized quantum anomalous Hall effect in bilayer graphene, by separately imprinting spin-orbit and magnetic proximity effects in different layers. This results in varying spin splittings for the conduction and valence bands, which gives rise to a topological gap at a single… 

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