Figure 6
From: Charge transfer and electronic doping in nitrogen-doped graphene
(a) Local density of states on the nitrogen atom for two sets of extended potentials defined by V0 on the nitrogen atom and V1 on the first neighbors. (b) Mulliken π charges around the nitrogen impurity: (top) V0/t = −1.47, V1/t = −0.95 (corresponding to the red curve in a); (bottom) V0/t = −2.08, V1/t = −1.34; t = 2.72 eV (corresponding to the black curve in a).
