Thermoelectric effects in strongly interacting quantum dot coupled to ferromagnetic leads

Abstract

We study thermoelectric effects in Kondo correlated quantum dot coupled to ferromagnetic electrodes by calculating conductance, thermopower and thermal conductance in the Kondo regime. We also study the effect of the asymmetry in the coupling to the leads, which has important consequences for anti-parallel magnetization configuration. We discuss the thermoelectric figure of merit, tunnel magnetoresistance and violation of the Wiedemann-Franz law in this system. The results agree with recently measured thermopower of the quantum dot defined in a two dimensional electron gas.

8 pages, 11 figures

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• Thermo-spin effects in a quantum dot connected to ferromagnetic leads
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• Nonlinear heat transport in mesoscopic conductors: Rectification, Peltier effect and Wiedemann-Franz law
• Inelastic effects in molecular junctions in the Coulomb and Kondo regimes: Nonequilibrium equation-of-motion approach
• Thermoelectric properties of an interacting quantum dot-based heat engine
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• Nanoscale Spin Seebeck Rectifier: Controlling Thermal Spin Transport across Insulating Magnetic Junctions with Localized Spin
• Spin-dependent thermoelectric phenomena in a quantum dot attached to ferromagnetic and superconducting electrodes
• Spin-dependent thermoelectric effects in a strongly correlated double quantum dot
• Kondo Resonance in the Presence of Spin-Polarized Currents
• Electronic transport in molecular junctions: The generalized Kadanoff-Baym ansatz with initial contact and correlations
• Fate of the spin-\frac{1}{2} Kondo effect in the presence of temperature gradients
• Spin-dependent thermoelectric effects in transport through a nanoscopic junction involving spin impurity
• Thermal rectification effect of an interacting quantum dot
• Multi-terminal far-from-equilibrium thermoelectric nano-devices in the Kondo regime
• Quantum confinement suppressing electronic heat flow below the Wiedemann-Franz law
• Microwave-mediated heat transport through a quantum dot
• Spin-dependent thermoelectric properties of a Kondo-correlated quantum dot with Rashba spin-orbit coupling
• Effect of magnetic anisotropy on spin-dependent thermoelectric effects in nanoscopic systems
• The role of metallic leads and electronic degeneracies in thermoelectric power generation in quantum dots
• Strong spin Seebeck effect in Kondo T-shaped double quantum dots
• Compensation of the Kondo effect in quantum dots coupled to ferromagnetic leads within equation of motion approach
• Time-Dependent Thermopower Effect in an Interacting Quantum Dot
• The effect of dephasing on thermoelectric efficiency of molecular junctions
• Interplay of the Kondo effect with the induced pairing in electronic and caloric properties of T-shaped double quantum dots
• Thermoelectric effects in STM tunneling through a monoatomic chain
• Thermoelectric properties of a quantum dot coupled to magnetic leads by Rashba spin-orbit interaction
• Spin Seebeck effect of correlated magnetic molecules
• Thermal transport of molecular junctions in the pair tunneling regime
• Proposal for a correlation induced spin-current polarizer
• Thermoelectric transport across a tunnel contact between two charge Kondo circuits: beyond perturbation theory
• Three-orbital Kondo effect in single quantum dot system with plural electrons
• Phonon-assisted thermoelectric effects in a two-level molecule
• Transient thermoelectricity in a vibrating quantum dot in Kondo regime
• Charge and Spin Thermoelectric Transport in Benzene-Based Molecular Nano-Junctions: A Quantum Many-Body Study
• Thermopower signatures and spectroscopy of the canyon of conductance suppression
• A Strongly Correlated Quantum-Dot Heat Engine with Optimal Performance: An Non-equilibrium Green's function Approach
• Thermopower of Kondo Effect in Single Quantum Dot Systems with Orbital at Finite Temperatures
• Effects of correlated hopping on thermoelectric response of a quantum dot strongly coupled to ferromagnetic leads
• Thermoelectric effects in tunneling of spin-polarized electrons in a molecular transistor