NRG study of the Kondo effect in the presence of itinerant-electron ferromagnetism

Abstract

The Kondo effect in quantum dots (QDs) - artificial magnetic impurities - attached to ferromagnetic leads is studied with the numerical renormalization group (NRG) method. It is shown that the QD level is spin-split due to presence of ferromagnetic electrodes, leading to a suppression of the Kondo effect. We find that the Kondo effect can be restored by compensating this splitting with a magnetic field. Although the resulting Kondo resonance then has an unusual spin asymmetry with a reduced Kondo temperature, the ground state is still a locally-screened state, describable by Fermi liquid theory and a generalized Friedel sum rule, and transport in the unitary limit is not spin dependent.

4 pages, 4 figures

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Cited by in corpus (121)

• The numerical renormalization group method for quantum impurity systems
• Theory of Transport through Quantum-Dot Spin Valves in the Weak-Coupling Regime
• Thermo-spin effects in a quantum dot connected to ferromagnetic leads
• The Kondo effect in ferromagnetic atomic contacts
• Tunnel magnetoresistance of quantum dots coupled to ferromagnetic leads in the sequential and cotunneling regimes
• Thermoelectric effects in strongly interacting quantum dot coupled to ferromagnetic leads
• Interference Effects on Kondo-Assisted Transport through Double Quantum Dots
• Nanospintronics with carbon nanotubes
• Gate-controlled spin-splitting in quantum dots with ferromagnetic leads in the Kondo regime
• Spin effects in single electron tunneling
• Rate equations for Coulomb blockade with ferromagnetic leads
• Realizing a Kondo-correlated state with ultracold atoms
• Kondo effect in a semiconductor quantum dot coupled to ferromagnetic electrodes
• Nonequilibrium Kondo Effect in a Quantum Dot Coupled to Ferromagnetic Leads
• Kondo quantum dot coupled to ferromagnetic leads: Numerical renormalization group study
• Unified description of correlations in double quantum dots
• Kondo effect in quantum dots coupled to ferromagnetic leads with noncollinear magnetizations
• Pseudospin-Resolved Transport Spectroscopy of the Kondo Effect in a Double Quantum Dot
• Zero-bias anomaly in cotunneling transport through quantum-dot spin valves
• Charge oscillations in Quantum Dots: Renormalization group and Hartree method calculations
• Transport through quantum-dot spin valves containing magnetic impurities
• Anderson Model out of equilibrium: decoherence effects in transport through a quantum dot
• Electronic waiting-time distribution of a quantum-dot spin valve
• Tunable Kondo effect in double quantum dots coupled to ferromagnetic contacts
• Three-terminal transport through a quantum dot in the Kondo regime: Conductance, dephasing, and current-current correlations
• Magnetoresistance of a quantum dot with spin-active interfaces
• Proximity effect on spin-dependent conductance and thermopower of correlated quantum dots
• Time-dependent quantum transport: causal superfermions, exact fermion-parity protected decay mode, and Pauli exclusion principle for mixed quantum states
• Paramagnetic molecule induced strong antiferromagnetic exchange coupling on a magnetic tunnel junction based molecular spintronics device
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• Adaptive logarithmic discretization for numerical renormalization group methods
• Probing the exchange field of a quantum-dot spin valve by a superconducting lead
• Kondo resonance of a Co atom exchange coupled to a ferromagnetic tip
• Kondo effect with non collinear polarized leads: a numerical renormalization group analysis
• Quantum Criticality in Ferromagnetic Single-Electron Transistors
• Non-equilibrium theory for strongly coupled quantum dot with arbitrary on-site correlation strength
• Spin polarized current and shot noise in carbon nanotube quantum dot in the Kondo regime
• Quantum Criticality out of Equilibrium: Steady State in a Magnetic Single-Electron Transistor
• Spin-polarized conductance in double quantum dots: Interplay of Kondo, Zeeman and interference effects
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• Non-collinear magnetoconductance of a quantum dot
• Detection of Majorana edge states in topological superconductors through the non-Fermi-liquid effects induced in an interacting quantum dot
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• The SU(4) Kondo effect in double quantum dots with ferromagnetic leads
• Kondo Resonance in the Presence of Spin-Polarized Currents
• Spin splitting and Kondo effect in quantum dots coupled to noncollinear ferromagnetic leads
• Spin resonance without spin splitting
• Kondo screening suppression by spin-orbit interaction in quantum dots
• Angular Conductance Resonances of Quantum Dots Non-Collinearly Coupled to Ferromagnetic Leads
• Underscreened Kondo effect in S=1 magnetic quantum dots: Exchange, anisotropy and temperature effects
• Transport across a carbon nanotube quantum dot contacted with ferromagnetic leads: experiment and non-perturbative modeling
• Kondo effect in quantum dots coupled to ferromagnetic leads with noncollinear magnetizations: effects due to electron-phonon coupling
• Scope of Magnetic Tunnel Junction Based Molecular Electronics and Spintronics Devices
• Direct Evidence for Suppression of the Kondo Effect due to Pure Spin Current
• Andreev tunneling through a double quantum-dot system coupled to a ferromagnet and a superconductor: effects of mean field electronic correlations
• Resonant magneto-tunneling between normal and ferromagnetic electrodes in relation to the three-terminal spin transport
• Kondo effect in spin-orbit mesoscopic interferometers
• Spin-polarized tunneling microscopy and the Kondo effect
• Coulomb Blockade and Kondo Effect in a Quantum Hall Antidot
• Thermoelectric effects in a strongly interacting quantum dot coupled to ferromagnetic leads
• Conductance plateau in quantum spin transport through an interacting quantum dot
• Spin-dependent thermoelectric properties of a Kondo-correlated quantum dot with Rashba spin-orbit coupling
• Influence of spin waves on transport through a quantum-dot spin valve
• Non-equilibrium spin-current detection with a single Kondo impurity
• Spin-orbital and spin Kondo effects in parallel coupled quantum dots
• Underscreened Kondo effect in quantum dots coupled to ferromagnetic leads
• Theory of spin pumping through an interacting quantum dot tunnel coupled to a ferromagnet with time-dependent magnetization
• Spin-Polarized STM for a Kondo adatom
• Transport through a quantum dot subject to spin and charge bias: Kondo regime
• Suppressed Kondo screening in two-dimensional altermagnets
• Quantum dot with ferromagnetic leads: a density-matrix renormalization group study
• Kondo correlation and spin-flip scattering in spin-dependent transport through a quantum dot coupled to ferromagnetic leads
• Kramers polarization in strongly correlated carbon nanotube quantum dots
• Compensation of the Kondo effect in quantum dots coupled to ferromagnetic leads within equation of motion approach
• Interaction quench dynamics in the Kondo model in presence of a local magnetic field
• Anomalous tunnel magnetoresistance and spin transfer torque in magnetic tunnel junctions with embedded nanoparticles
• Entanglement entropy and quantum phase transitions in quantum dots coupled to Luttinger liquid wires
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• Nonequilibrium spintronic transport through Kondo impurities
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• Kondo effect in a quantum dot coupled to ferromagnetic leads and side-coupled to a nonmagnetic reservoir
• Asymmetry-induced effects in Kondo quantum dots coupled to ferromagnetic leads
• Ferromagnetic induced Kondo effect in graphene with a magnetic impurity
• Fano resonance in a normal metal/ferromagnet-quantum dot-superconductor device
• Magnetic impurities in an altermagnetic metal
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• Spintronic transport and Kondo effect in quantum dots
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• On the concept of effective temperature in current carrying quantum critical states
• Theory of transport through noncollinear single-electron spin-valve transistors
• Magnetoresistance and transistor-like behavior of double quantum dots connected to ferromagnetic and superconductor leads
• Compensation effect in carbon nanotube quantum dots coupled to polarized electrodes in the presence of spin-orbit coupling
• Quantum Dots Attached to Ferromagnetic Leads: Exchange Field, Spin Precession, and Kondo Effect
• Fano-Kondo Spin Filter
• Spin transport properties of a quantum dot coupled to ferromagnetic leads with noncollinear magnetizations
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• Magnetic Single-Electron Transistor as a Tunable Model System for Kondo-Destroying Quantum Criticality
• Nonlinear electric and thermoelectric Andreev transport through a hybrid quantum dot coupled to ferromagnetic and superconducting leads
• Two-channel Kondo problem in coupled interacting helical liquids
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• Kondo enhancement of current induced spin accumulation in a quantum dot
• Spatial spin-spin correlations of the single-impurity Anderson model with a ferromagnetic bath
• Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas
• Interaction-induced current asymmetries in resonant transport through interacting quantum-dot spin valves revealed by iterative summation of path integrals
• Magnetic and transport properties of the one-dimensional ferromagnetic Kondo lattice model with an impurity
• The strong-coupling limit of a Kondo spin coupled to a mesoscopic quantum dot: effective Hamiltonian in the presence of exchange correlations
• Kondo effect near the Van Hove singularity in biased bilayer graphene
• Two-orbital Kondo effect in quantum dot coupled to ferromagnetic leads
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• Residual Kondo effect in quantum dot coupled to half-metallic ferromagnets
• Current fluctuations of noncollinear single-electron spin-valve transistors
• Thermopower of few-electron quantum dots with Kondo correlations
• Effects of correlated hopping on thermoelectric response of a quantum dot strongly coupled to ferromagnetic leads
• Dimensionality effects in the LDOS of ferromagnetic hosts probed via STM: spin-polarized quantum beats and spin filtering
• Magnetic and transport properties of a one dimensional frustrated t-J model for vanadate nanotubes
• Fractional shot noise of an SU(N) Kondo system