Calculated results of the conductance G1,± to the drain 1 for spin ±1/2 in the impurity Anderson model with three leads. In the abscissa, εd = (ε1 + ε2)/2, where ε1 and ε2 are the energy levels in the quantum dot. Solid and broken lines indicate G1,+ and G1,-, respectively. The level broadening by the tunnel coupling to the source and drain 1 is ΓS = ΓD1 ≡ Γ (VS,1/VS,2 = 1/2, VD1,1/VD1,2 = -3), whereas that to drain 2 is (a) ΓD2 = 0.2Γ, (b) 0.5Γ, (c) Γ, and (d) 2Γ (VD2,1/VD2,2 = 1). Δε = ε2 - ε1 = 0.2Γ. The strength of SO interaction is ΔSO = 0.2Γ.
Yokoyama and Eto Nanoscale Research Letters 2011 6:436 doi:10.1186/1556-276X-6-436