Distinct edge states and optical conductivities in the zigzag and armchair silicene nanoribbons under exchange and electric fields
Zou Jianfei, Kang Jing
       

Low energy electronic structures of 30-ASiNR (a) without external fields, (b) with the exchange field, (c) with the electric field, and (d) with both of the two external fields. The parameters are the same as those in Fig. 2.