Kondo effect in Aharonov-Casher spin field-effect transistor

We address the question how Coulomb blockade in the nanowire affects the transport in Datta-Das transistor with anti-collinear partially magnetized electrodes in the regime when Kondo phenomena is reached. We use non-equilibrium Keldysh Green function technique at weak coupling regime to obtain first two non-vanishing contribution to the charge current. It is predicted that the effects of spin-orbit interaction result in a non-vanishing current for any spin polarization of the leads including the case of fully polarized anti-collinear contacts.
The dependence of the Kondo temperature on the Aharonov-Casher phase and degree of polarization in the leads is determined by the solution of the system of coupled Renormalization Group equations. Analysis of the Kondo temperature shows that it decays with increasing of the Aharonov-Casher phase and decreasing of the degree of polarization in the leads.