Comment on "Conductance scaling in Kondo-correlated quantum dots: Role of level asymmetry and charging energy"
arXiv:1312.7266 · doi:10.1103/PhysRevB.90.077101
Abstract
In a recent work [L. Merker, S. Kirchner, E. Munoz, and T. A. Costi, Phys. Rev. B 87, 165132 (2013)], the authors compared results of numerical renormalization group and a perturbative approach for the dependence on temperature T and magnetic field B of the conductance through a quantum dot described by the impurity Anderson model, for small T and B. We show that the equation used to extract the dependence on B from NRG results is incorrect out of the particle-hole symmetric case. As a consequence, in the Kondo regime, the correct NRG results have a weaker dependence on B and the disagreement between both approaches increase.
3 pages, 1 figure, references updated
References in corpus (8)
- Universal Scaling in Non-equilibrium Transport Through a Single-Channel Kondo Dot
- Symmetry fingerprints of a benzene single-electron transistor
- Universal Scaling of Nonequilibrium Transport in the Kondo Regime of Single Molecule Devices
- Conductance scaling in Kondo correlated quantum dots: role of level asymmetry and charging energy
- Universal scaling in nonequilibrium transport through an Anderson impurity
- Nonequilibrium self-energies, Ng approach and heat current of a nanodevice for small bias voltage and temperature
- Nonequilibrium conductance through a benzene molecule in the Kondo regime
- Universal out-of-equilibrium transport in Kondo-correlated quantum dots