Enhancing of nonlinear thermoelectric response of a correlated quantum dot in the Kondo regime by asymmetrically coupling to the leads

Abstract

We study the low temperature properties of the differential response of the current to a temperature gradient at finite voltage in a single level quantum dot including electron-electron interaction, non-symmetric couplings to the leads and non-linear effects. The calculated response is significantly enhanced in setups with large asymmetries between the tunnel couplings. In the investigated range of voltages and temperatures with corresponding energies up to several times the Kondo energy scale, the maximum response is enhanced nearly an order of magnitude with respect to symmetric coupling to the leads.

7 pages, 6 figures, accepted for publication in Phys. Rev. B

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Cited by in corpus (18)

• Numerically exact counting statistics of energy current in the Kondo regime
• Heat current across a capacitively coupled double quantum dot for high magnetic field
• Optimal thermoelectricity with quantum spin-Hall edge states
• Comparative study of heat-driven and power-driven refrigerators with Coulomb-coupled quantum dots
• Multi-terminal far-from-equilibrium thermoelectric nano-devices in the Kondo regime
• Non-Linear Thermovoltage in a Single-Electron Transistor
• Nonlinear Seebeck effect of SU($N$) Kondo impurity
• Nonequilibrium Seebeck effect and thermoelectric efficiency of Kondo-correlated molecular junctions
• 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
• Enhanced performance of a quantum-dot-based nanomotor due to Coulomb interactions
• Statistics of heat transport across capacitively coupled double quantum dot circuit
• The role of metallic leads and electronic degeneracies in thermoelectric power generation in quantum dots
• Thermoelectric properties of a double quantum dot out of equilibrium in Kondo and intermediate valence regimes
• Thermoelectric cooling properties of a quantum Hall Corbino device
• 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
• Three-body Fermi liquid corrections for an infinite-$U$ SU($N$) Anderson impurity model
• Signatures of the Correlated-Hopping Interaction in Non-Linear Transport through a Quantum Dot