Extended Data Fig. 2: Representatives of the five competing broken symmetry ground states in bilayer graphene at n = E⊥ = B = 0. | Nature

Extended Data Fig. 2: Representatives of the five competing broken symmetry ground states in bilayer graphene at n = E⊥ = B = 0.

From: Quantum anomalous Hall octet driven by orbital magnetism in bilayer graphene

Extended Data Fig. 2

a–e, Bottom panel: layer polarizations of the four spin-valley species. Top-left and top-right panels: bulk (classical) and edge (quantum) pictures of the corresponding spontaneous quantum Hall effect. Note that the edge roughness can produce couplings between counter-propagating edge states (of the same spin but different valleys) and thus gap them. Spin degeneracy is implicit in a and b. See the text for details. T and B refer to the top and bottom graphene layers, respectively.

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