Nonlinear Seebeck effect of SU($N$) Kondo impurity

Abstract

We develop a theoretical framework to study the influences of coupling asymmetry on the thermoelectrics of a strongly coupled SU($N$) Kondo impurity based on a local Fermi liquid theory. Applying non-equilibrium Keldysh formalism, we investigate charge current driven by the voltage bias and temperature gradient in the strong coupling regime of an asymmetrically coupled SU($N$) quantum impurity. The thermoelectric characterizations are made via non-linear Seebeck effects. We demonstrate that the beyond particle-hole (PH) symmetric SU($N$) Kondo variants are highly desirable with respect to the corresponding PH symmetric setups in order to have significantly improved thermoelectric performance. The greatly enhanced Seebeck coefficients by tailoring the coupling asymmetry of beyond PH symmetric SU($N$) Kondo effects are explored. Apart from presenting the analytical expressions of asymmetry dependent transport coefficients for general SU($N$) Kondo effects, we make a close connection of our findings with the experimentally studied SU(2) and SU(4) Kondo effects in quantum dot nano structures. Seebeck effects associated with the theoretically proposed SU(3) Kondo effects are discussed in detail.

arXiv comment10 pages, 4 figures

References in corpus (48)

• Fundamental aspects of steady-state conversion of heat to work at the nanoscale
• Orbital Kondo effect in carbon nanotubes
• Quantum limit of heat flow across a single electronic channel
• Kondo effect in quantum dots
• Thermopower of a Kondo-correlated quantum dot
• Thermoelectric transport through strongly correlated quantum dots
• Overscreened multi-channel SU(N) Kondo model : large-N solution and Conformal Field Theory
• Two-channel Kondo effect and renormalization flow with macroscopic quantum charge states
• Kondo effect in real quantum dots
• SU(4) Kondo Effect in Carbon Nanotubes
• Observation of the SU(4) Kondo state in a double quantum dot
• SU(4) and SU(2) Kondo Effects in Carbon Nanotube Quantum Dots
• Evolution of SU(4) Transport Regimes in Carbon Nanotube Quantum Dots
• Thermopower of Aharonov-Bohm Interferometer with a Quantum Dot
• Kondo Effects in Carbon Nanotubes: From SU(4) to SU(2) symmetry
• Quantum phase transition in a two-channel-Kondo quantum dot device
• Theory of non-equilibrium transport in the SU(N) Kondo regime
• SU(3) orbital Kondo effect with ultracold atoms
• Realizing a Kondo-correlated state with ultracold atoms
• Universality of Non-equilibrium Fluctuations in Strongly Correlated Quantum Liquids
• Direct measurement of the Seebeck coefficient in a Kondo-correlated single-quantum-dot transistor
• Thermopower of a single electron transistor in the regime of strong inelastic cotunneling
• Magnetic Field Probing of an SU(4) Kondo Resonance in a Single Atom Transistor
• Thermoelectric characterization of the Kondo resonance in nanowire quantum dots
• Thermoelectric effects of an Aharonov-Bohm interferometer with an embedded quantum dot in the Kondo regime
• Controlling charge quantization with quantum fluctuations
• Enhancement of Kondo effect in multilevel quantum dots
• How to directly measure a Kondo cloud's length
• Kondo physics and orbital degeneracy interact to boost thermoelectrics on the nanoscale
• Transport measurement of the orbital Kondo effect with ultracold atoms
• Transport through a quantum dot with SU(4) Kondo entanglement
• Quantum Fluctuations along Symmetry Crossover in Kondo-correlated Quantum Dot
• Fermi liquid theory for SU(N) Kondo model
• SU(3) Kondo effect in spinless triple quantum dots
• Thermoelectric response of a correlated impurity in the nonequilibrium Kondo regime
• Enhancing of nonlinear thermoelectric response of a correlated quantum dot in the Kondo regime by asymmetrically coupling to the leads
• Realization of SU(N) Kondo effect in strong magnetic field
• Two-color Fermi liquid theory for transport through a multilevel Kondo impurity
• Coqblin-Schrieffer Model for an Ultra-cold Gas of Ytterbium atoms with Metastable States
• Emission Noise and High Frequency Cut-Off of the Kondo Effect in a Quantum Dot
• Thermoelectric Transport through SU(N) Kondo Impurity
• Enhanced shot noise of multiple Andreev reflections in a carbon nanotube quantum dot in SU(2) and SU(4) Kondo regimes
• Abrupt disappearance and reemergence of the SU(2) and SU(4) Kondo effects due to population inversion
• Transmission phase shifts of Kondo impurities
• Orbital caloritronic transport in strongly interacting quantum dots
• SU(12) Kondo Effect in Carbon Nanotube Quantum Dot
• Full counting statistics of the two-stage Kondo effect
• Three-orbital Kondo effect in single quantum dot system with plural electrons

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• Coulomb blockade oscillations of heat conductance in the charge Kondo regime
• Quantum thermoelectric and heat transport in the overscreened Kondo regime: Exact conformal field theory results
• Wiedemann-Franz law in scattering theory revisited
• Quantum thermal transport in the charged Sachdev-Ye-Kitaev model: Thermoelectric Coulomb blockade
• Thermoelectric properties of a double quantum dot out of equilibrium in Kondo and intermediate valence regimes
• Intrinsic nonlinear Nernst and Seebeck effect
• Effects of strong electron interactions and resonance scattering on power output of nano-devices
• Heat conductance oscillations in two weakly connected charge Kondo circuits
• Role of asymmetry in thermoelectric properties of a double quantum dot out of equilibrium
• Nonlinear spin-Seebeck diode in $f$-wave magnets, third-order spin-Nernst effects in $g$-wave magnets and spin-Nernst effects in $i$-wave altermagnets
• Transmission phase evolution in fully screened and overscreened Kondo impurities
• Open harmonic chain without secular approximation