Thermoelectric response of a correlated impurity in the nonequilibrium Kondo regime

Abstract

We study nonequilibrium thermoelectric transport properties of a correlated impurity connected to two leads for temperatures below the Kondo scale. At finite bias, for which a current flows across the leads, we investigate the differential response of the current to a temperature gradient. In particular, we compare the influence of a bias voltage and of a finite temperature on this thermoelectric response. This is of interest from a fundamental point of view to better understand the two different decoherence mechanisms produced by a bias voltage and by temperature. Our results show that in this respect the thermoelectric response behaves differently from the electric conductance. In particular, while the latter displays a similar qualitative behavior as a function of voltage and temperature, both in theoretical and experimental investigations, qualitative differences occur in the case of the thermoelectric response. In order to understand this effect, we analyze the different contributions in connection to the behavior of the impurity spectral function versus temperature. Especially in the regime of strong interactions and large enough bias voltages we obtain a simple picture based on the asymmetric suppression or enhancement of the split Kondo peaks as a function of the temperature gradient. Besides the academic interest, these studies could additionally provide valuable information to assess the applicability of quantum dot devices as responsive nanoscale temperature sensors.

arXiv comment11 pages, 13 figures

References in corpus (95)

• Exchange Monte Carlo Method and Application to Spin Glass Simulations
• Kondo Physics in a Single Electron Transistor
• A Tunable Kondo Effect in Quantum Dots
• The numerical renormalization group method for quantum impurity systems
• Parallel Tempering: Theory, Applications, and New Perspectives
• Silicon Quantum Electronics
• Opportunities for mesoscopics in thermometry and refrigeration: Physics and applications
• Molecular Transport Junctions: Vibrational Effects
• The Anderson Model out of Equilibrium: Non-Crossing-Approximation Approach to Transport through a Quantum Dot
• Resonant tunneling through ultrasmall quantum dots: zero-bias anomalies, magnetic field dependence, and boson-assisted transport
• Reversible quantum Brownian heat engines for electrons
• Thermoelectric efficiency at maximum power in a quantum dot
• A thermoelectric heat engine with ultracold atoms
• Conduction of Ultracold Fermions Through a Mesoscopic Channel
• Simultaneous Determination of Conductance and Thermopower of Single Molecule Junctions
• Heat dissipation in atomic-scale junctions
• Electron Cotunneling in a Semiconductor Quantum Dot
• Thermopower of a Kondo-correlated quantum dot
• Anomalous Kondo-effect in Quantum Dot at non-zero bias
• Nonequilibrium Transport in Quantum Impurity Models (Bethe-Ansatz for open systems)
• Thermopower of Single-Molecule Devices
• Observation of Quantized Conductance in Neutral Matter
• Thermoelectric transport through strongly correlated quantum dots
• Optimal thermoelectric figure of merit of a molecular junction
• On steady-state currents through nano-devices: a scattering-states numerical renormalization group approach to open quantum systems
• Violation of the Wiedemann-Franz Law in a Single-Electron Transistor
• Tuning the Kondo effect with a mechanically controllable break junction
• Electric Field Controlled Magnetic Anisotropy in a Single Molecule
• Non-Equilibrium Transport through a Kondo-Dot in a Magnetic Field: Perturbation Theory and Poor Man's Scaling
• Real-time simulations of nonequilibrium transport in the single-impurity Anderson model
• Quantum transport in ultracold atoms
• The Kondo effect in quantum dots at high voltage: Universality and scaling
• Nonequilibrium Singlet-Triplet Kondo Effect in Carbon Nanotubes
• Cotunneling Spectroscopy in Few-Electron Quantum Dots
• Non-linear thermoelectrics of molecular junctions with vibrational coupling
• Cotunneling thermopower of single electron transistors
• Nonequilibrium Dynamical Mean Field Theory: an auxiliary Quantum Master Equation approach
• Weak-coupling quantum Monte Carlo calculations on the Keldysh contour: theory and application to the current-voltage characteristics of the Anderson model
• Scaling and Decoherence in the Out-of-Equilibrium Kondo Model
• Kondo effect by controlled cleavage of a single molecule contact
• Nonlinear thermovoltage and thermocurrent in quantum dots
• Auxiliary master equation approach to non-equilibrium correlated impurities
• Tunneling Spectra of Individual Magnetic Endofullerene Molecules
• Nonequilibrium functional RG with frequency dependent vertex function: A study of the single impurity Anderson model
• Heat dissipation and its relation to thermopower in single-molecule junctions
• Green's functions from real-time bold-line Monte Carlo: spectral properties of the nonequilibrium Anderson impurity model
• Charge transport through single molecules, quantum dots, and quantum wires
• Electronic excitation spectrum of metallic carbon nanotubes
• Thermopower of Aharonov-Bohm Interferometer with a Quantum Dot
• Perturbative Approach to the Nonequilibrium Kondo Effect in a Quantum Dot
• Imaginary-time formulation of steady-state nonequilibrium: application to strongly correlated transport
• Nonlinear heat transport in mesoscopic conductors: Rectification, Peltier effect and Wiedemann-Franz law
• Spin-thermopower in interacting quantum dots
• Quantum Monte-Carlo for correlated out-of-equilibrium nanoelectronics devices
• Nonequilibrium Kondo model: Crossover from weak to strong coupling
• Pumping of vibrational excitations in a Coulomb blockaded suspended carbon nanotube
• Correlations of heat and charge currents in quantum-dot thermoelectric engines
• Auxiliary master equation approach within matrix product states: Spectral properties of the nonequilibrium Anderson impurity model
• Transport through an Anderson impurity: Current ringing, non-linear magnetization and a direct comparison of continuous-time quantum Monte Carlo and hierarchical quantum master equations
• Kondo screening cloud in the single-impurity Anderson model: A density matrix renormalization group study
• Fermionic superoperators for zero-temperature non-linear transport: real-time perturbation theory and renormalization group for Anderson quantum dots
• Mapping out spin and particle conductances in a quantum point contact
• Mechanism for large thermoelectric power in negative-U molecular quantum dots
• Measuring the Out-of-Equilibrium Splitting of the Kondo Resonance
• Influence of vibrational modes on the quantum transport through a nano-device
• Quantum-fluctuation effects on the thermopower of a single-electron transistor
• A quantum point contact for neutral atoms
• Universal out-of-equilibrium Transport in Kondo-correlated quantum dots: Renormalized dual Fermions on the Keldysh contour
• Nonlinear thermoelectricity in point-contacts at pinch-off: a catastrophe aids cooling
• Real-time renormalization group in frequency space: A 2-loop analysis of the nonequilibrium anisotropic Kondo model at finite magnetic field
• Fermi-liquid theory for the single-impurity Anderson model
• Nonequilibrium, spatio-temporal formation of the Kondo screening-cloud on a lattice
• Hybrid NRG-DMRG approach to real-time dynamics of quantum impurity systems
• Voltage quench dynamics of a Kondo system
• Kondo physics and orbital degeneracy interact to boost thermoelectrics on the nanoscale
• Universal lineshape of the Kondo zero-bias anomaly in a quantum dot
• Efficiency and power of a thermoelectric quantum dot device
• Non-Equilibrium Kondo Model with Voltage Bias in a Magnetic Field
• Thermopower of an SU(4) Kondo resonance under an SU(2) symmetry-breaking field
• Padé approximants for improved finite-temperature spectral functions in the numerical renormalization group
• Kondo model in nonequilibrium: Interplay between voltage, temperature, and crossover from weak to strong coupling
• Non-equilibrium conductance of a three-terminal quantum dot in the Kondo regime: Perturbative Renormalization Group
• Tunable Charge and Spin Seebeck Effects in Magnetic Molecular Junctions
• Nonequilibrium Zeeman-splitting in quantum transport through nanoscale junctions
• Nonequilibrium Kondo transport through a quantum dot in a magnetic field
• Transport Through a Correlated Interface: Auxiliary Master Equation Approach
• Transport Coefficients of the Anderson Model
• Slave-boson Keldysh field theory for the Kondo effect in quantum dots
• Charge fluctuations in nonlinear heat transport
• Steady-state spectra, current and stability diagram of a quantum dot: a non-equilibrium Variational Cluster Approach
• Strongly-Correlated Thermoelectric Transport beyond Linear Response
• Tuning thermoelectric power factor by crystal-field and spin-orbit couplings in Kondo lattice materials
• Steady-state and quench dependent relaxation of a quantum dot coupled to one-dimensional leads
• Spin thermopower in the overscreened Kondo model
• Quasiparticle excitations in steady state transport across a correlated layer

Cited by in corpus (20)

• Quantum thermodynamic devices: from theoretical proposals to experimental reality
• Thermoelectric characterization of the Kondo resonance in nanowire quantum dots
• Numerically exact counting statistics of energy current in the Kondo regime
• Universal Majorana thermoelectric noise
• Heat current across a capacitively coupled double quantum dot for high magnetic field
• Enhancing of nonlinear thermoelectric response of a correlated quantum dot in the Kondo regime by asymmetrically coupling to the leads
• Pseudogap Anderson impurity model out of equilibrium: A master equation tensor network approach
• Fate of the spin-\frac{1}{2} Kondo effect in the presence of temperature gradients
• Nonequilibrium Kondo effect in a magnetic field: Auxiliary master equation approach
• Multi-terminal far-from-equilibrium thermoelectric nano-devices in the Kondo regime
• Thermoelectric Transport through SU(N) Kondo Impurity
• Thermoelectrics of Interacting Nanosystems -- Exploiting Superselection instead of Time-Reversal Symmetry
• Nonlinear Seebeck effect of SU($N$) Kondo impurity
• Nonequilibrium Seebeck effect and thermoelectric efficiency of Kondo-correlated molecular junctions
• Magnetic field dependence of the thermopower of Kondo-correlated quantum dots: Comparison with experiment
• Nonequilibrium Kondo effect by equilibrium numerical renormalization group method: The hybrid Anderson model subject to a finite spin bias
• Thermoelectric properties of a double quantum dot out of equilibrium in Kondo and intermediate valence regimes
• Thermoelectric properties of a strongly correlated layer
• Role of asymmetry in thermoelectric properties of a double quantum dot out of equilibrium
• Signatures of the Correlated-Hopping Interaction in Non-Linear Transport through a Quantum Dot