Universal scaling in nonequilibrium transport through an Anderson impurity
arXiv:0901.4326 · doi:10.1103/PhysRevB.79.121301
Abstract
Using non-equilibrium renormalized perturbation theory, we calculate the conductance G as a function of temperature T and bias voltage V for an Anderson model, suitable for describing transport properties through a quantum dot. For renormalized parameters that correspond to the extreme Kondo limit, we do not find a simple scaling formula beyond a quadratic dependence in T and V. However, if valence fluctuations are allowed, we find agreement with recent experiments.
Eq.(10) corrected
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