Fig. 3: Schematic diagram of the five possible antichiral edge states.
From: Modulation of antichiral edge states in zigzag honeycomb nanoribbons by side potentials
The black arrows denote the spin degeneracy case, and the red (blue) arrows denote the spin-up (down) case. The thin and thick arrows represent the antichiral edge states and the counterpropagating bulk states, respectively.
