LOW-TEMPERATURE TRANSPORT THROUGH A QUANTUM DOT - THE ANDERSON MODEL OUT OF EQUILIBRIUM

The infinite-U Anderson model is applied to nonequilibrium transport t hrough a quantum dot containing two spin levels weakly coupled to two leads. At low temperatures, the Kondo peak in the equilibrium density of states is split upon the application of a voltage bias. The split p eaks, one at the chemical potential of each lead, are suppressed by no nequilibrium dissipation. In a magnetic field, the Kondo peaks shift a way from the chemical potentials by the Zeeman energy, leading to an o bservable peak in the differential conductance when the nonequilibrium bias equals the Zeeman energy.