Nonequilibrium conductance of asymmetric nanodevices in the Kondo regime

Abstract

The scaling properties of the conductance of a Kondo impurity connected to two leads that are in or out of equilibrium has been extensively studied, both experimentally and theoretically. From these studies, a consensus has emerged regarding the analytic expression of the scaling function. The question addressed in this brief report concerns the properties of the experimentally measurable coefficient $\alpha$ present in the term describing the leading dependence of the conductance on $eV/T_K$, where $V$ is the source-drain voltage and $T_K$ the Kondo temperature. We study the dependence of $\alpha$ on the ratio of the lead-dot couplings for the particle-hole symmetric Anderson model and find that this dependence disappears in the strong coupling Kondo regime in which the charge fluctuations of the impurity vanish.

4 pages, 1 figure

References in corpus (7)

• Kondo effect in quantum dots
• Universal Scaling in Non-equilibrium Transport Through a Single-Channel Kondo Dot
• Theory of non-equilibrium transport in the SU(N) Kondo regime
• Full counting statistics for the Kondo dot in the unitary limit
• Universal Scaling of Nonequilibrium Transport in the Kondo Regime of Single Molecule Devices
• Universal scaling in nonequilibrium transport through an Anderson impurity
• Two-Channel Kondo Effects in Al/AlO${}_x$/Sc Planar Tunnel Junctions

Cited by in corpus (45)

• Spin-1/2 Kondo effect in an InAs nanowire quantum dot: the Unitary limit, conductance scaling and Zeeman splitting
• Nonequilibrium Kondo model: Crossover from weak to strong coupling
• Evolution of the Kondo Effect in a Quantum Dot Probed by the Shot Noise
• Auxiliary master equation approach within matrix product states: Spectral properties of the nonequilibrium Anderson impurity model
• Universal low-temperature crossover in two-channel Kondo models
• Universal out-of-equilibrium Transport in Kondo-correlated quantum dots: Renormalized dual Fermions on the Keldysh contour
• Shot Noise in Mesoscopic Systems: from Single Particles to Quantum Liquids
• Fermi-liquid theory for the single-impurity Anderson model
• Solving quantum impurity problems in and out of equilibrium with variational approach
• Variational principle for quantum impurity systems in and out of equilibrium: application to Kondo problems
• Nonequilibrium conductance of a nanodevice for small bias voltage
• Thermopower of an SU(4) Kondo resonance under an SU(2) symmetry-breaking field
• The Kondo crossover in shot noise of a single quantum dot with orbital degeneracy
• Kondo model in nonequilibrium: Interplay between voltage, temperature, and crossover from weak to strong coupling
• Nonequilibrium self-energies, Ng approach and heat current of a nanodevice for small bias voltage and temperature
• Keldysh effective action theory for universal physics in spin-1/2 Kondo dots
• Full counting statistics for SU(N) impurity Anderson model
• Perfect spin filter by periodic drive of a ferromagnetic quantum barrier
• Magnetic Field Universality of the Kondo Effect Revealed by Thermocurrent Spectroscopy
• Impact of capacitance and tunneling asymmetries on Coulomb blockade edges and Kondo peaks in non-equilibrium transport through molecular quantum dots
• Transport Characterization of Kondo-Correlated Single Molecule Devices
• Relation between width of the zero-bias anomaly and Kondo temperaure in transport measurements through correlated quantum dots: Effect of asymmetric coupling to the leads
• Fermi liquid theory for nonlinear transport through a multilevel Anderson impurity
• Magnetic field effects on the finite-frequency noise and ac conductance of a Kondo quantum dot out of equilibrium
• Out of equilibrium transport through an Anderson impurity: Probing scaling laws within the equation of motion approach
• Three-body correlations in nonlinear response of correlated quantum liquid
• Current noise and Keldysh vertex function of an Anderson impurity in the Fermi liquid regime
• Universal out-of-equilibrium transport in Kondo-correlated quantum dots
• Transport properties of fully screened Kondo models
• 1/(N-1) expansion based on a perturbation theory in U for the Anderson model with N-fold degeneracy
• 1/(N-1) expansion for a finite U Anderson model away from half-filling
• Scaling of conductance through quantum dots with magnetic field
• Nonlinear Fermi-liquid transport through a quantum dot in asymmetric tunnel junctions
• Thermoelectric properties of a double quantum dot out of equilibrium in Kondo and intermediate valence regimes
• Spin selective transport through Aharonov-Bohm and Aharonov-Casher triple quantum dot systems
• Leading temperature dependence of the conductance in Kondo-correlated quantum dots
• Coulomb oscillations of the Fano-Kondo effect and zero bias anomalies in the double dot meso-transistor
• Comment on "Conductance scaling in Kondo-correlated quantum dots: Role of level asymmetry and charging energy"
• High-order terms in the renormalized perturbation theory for the Anderson impurity model
• Thermoelectric transport and current noise through a multilevel Anderson impurity: Three-body Fermi-liquid corrections in quantum dots and magnetic alloys
• Role of asymmetry in thermoelectric properties of a double quantum dot out of equilibrium
• Kondo temperature of a quantum dot
• Three-body Fermi liquid corrections for an infinite-$U$ SU($N$) Anderson impurity model
• 1/(N-1) expansion approach to full counting statistics for the SU(N) Anderson model
• Three-body Fermi-liquid corrections for Andreev transport through quantum dots