Universal scaling in nonequilibrium transport through an Anderson impurity

Details Universal scaling in nonequilibrium transport through an Anderson impurity Universal scaling in nonequilibrium transport through an Anderson impurity

2009-01-27

arxiv.org/abs/0901.4326v5

Phys. Rev. B 79, 121301(R) (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

Eq.(10) corrected

Scientific paper

10.1103/PhysRevB.79.121301

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.

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