  Using density functional theory and non-equilibrium Greens function
technique, we performed theoretical investigations on the structural and
transport properties of zigzag silicene nanoribbons with Stone-Wales defect.
The calculated formation energy is significantly lower than that of graphene
and silicene, which implies the high stability of such defect in SiNRs.
Negative differential resistance can be observed within certain bias voltage
range in both perfect and SW defected SiNRs. In order to elucidate the
mechanism the NDR behavior,the transmission spectra and molecular projected
self-consistent Hamiltonian states are discussed in details.
