Sketches of the spin diode system and electrostatic model. (a) Sketch of the spin diode system. The dot level is attached to two ferromagnetic contacts. VLσ and VRσ indicate the spin-dependent bias voltages applied to the left (L) and (R) right contacts, respectively. The dot level is spin split by a magnetic field B: ε↑≠ε↓. Both spin-dependent energy levels are connected by spin-flip processes with a rate given by γsf. (b) Electrostatic model: ϕ↑, and ϕ↓ are the dot internal potentials calculated using capacitance couplings [ Cui, Cdi (i=1⋯4), C] within an electrostatic model.
Lim et al. Nanoscale Research Letters 2013 8:246 doi:10.1186/1556-276X-8-246