Band structure and edge states of star-like zigzag graphene nanoribbons
(color online) (a) The geometrical structure and (b) the reciprocal space structure of quasi-three dimensional S-ZGNR. The high symmetrical k points are M1, M2, M4, K1, and K2. The blue/red arrows show the unit vectors in real-space/reciprocal space in the x–y plane.
