Fig. 2.

Spin and valley physics of an afm honeycomb lattice. (A) s ⋅ τ–selective CD in the absence of spin–orbit coupling. (B) When spin–valley coupling is present, the valleys can be doped asymmetrically. (C) Electron spin (bottom of conduction bands) fluxes under the action of Berry curvature of the Bloch bands and in-plane electric field. The spin-up and spin-down currents are shown in blue and green, respectively. Solid and dashed lines stand for the currents from K₊ and K₋, respectively. The spin and valley, (s, τ), indices are indicated in parentheses. E is an applied in-plane electric field.