Spin transport and polarization properties of manganese-doped   dual-guanine molecule
  We study the spin transport and polarization properties of manganese-doped dual-guanine molecules connected to graphene leads using non-equilibrium Green's function method. It is shown that a manganese doped dual-guanine molecule is a biological semiconductor and behaves as a prefect spin filter. We show that this semiconductor can behave as a spin switch when the Rashba spin-orbit interaction is considered. In addition, it is shown that, a large conductance is observed due to the Fano-Kondo-Rashba resonance effect. 
Hamidreza Simchi, Mahdi Esmaeilzadeh, Hossein Mazidabadi, and Mohammad   Nourozi
cond-mat.mes-hall