Nonequilibrium cotunneling through a three-level quantum dot
Nonequilibrium cotunneling through a three-level quantum dot
We calculate the nonlinear cotunneling conductance through a quantum dot with three electrons occupying the three highest-lying energy levels. Starting from a three-orbital Anderson model, we apply a generalized Schrieffer-Wolff transformation to derive an effective Kondo model for the system. Within this model we calculate the nonequilibrium occupation numbers and …