Transport through quantum-dot spin valves containing magnetic impurities

Abstract

We investigate transport through a single-level quantum dot coupled to noncollinearly magnetized ferromagnets in the presence of localized spins in either the tunnel barrier or on the quantum dot. For a spin embedded in the tunnel barrier, we find an interplay between current-induced switching of the spin, spin-dependent tunneling through the barrier and spin accumulation on the dot resulting in characteristic signals in the current. We, furthermore, find huge Fano factors due to random telegraph noise. For noncollinear geometries, an exchange field that depends on the impurity spin state leads to characteristic fingerprints in the transport properties. In the case of a spin on the quantum dot, we find that the frequency-dependent Fano factor can be used to study the nontrivial dynamics of the spins on the dot due to the interplay between exchange interaction and coupling to external and exchange magnetic fields.

25 pages, 14 figures

References in corpus (62)

• Driven coherent oscillations of a single electron spin in a quantum dot
• Mechanical Control of Spin States in Spin-1 Molecules and the Underscreened Kondo Effect
• The role of magnetic anisotropy in the Kondo effect
• Electric Field Control of Spin Transport
• Resonant tunneling through ultrasmall quantum dots: zero-bias anomalies, magnetic field dependence, and boson-assisted transport
• Kondo effect in quantum dots coupled to ferromagnetic leads
• Signatures of Molecular Magnetism in Single-Molecule Transport Spectroscopy
• Nuclear spin induced oscillatory current in spin-blocked quantum dots
• Theory of the Franck-Condon blockade regime
• Zero-bias anomalies and boson-assisted tunneling through quantum dots
• Theory of Transport through Quantum-Dot Spin Valves in the Weak-Coupling Regime
• NRG study of the Kondo effect in the presence of itinerant-electron ferromagnetism
• Electric-field controlled spin reversal in a quantum dot with ferromagnetic contacts
• Positive cross-correlations in a three-terminal quantum dot with ferromagnetic contacts
• Electric Field Controlled Magnetic Anisotropy in a Single Molecule
• Interaction-driven spin precession in quantum-dot spin valves
• Theory of single spin inelastic tunneling spectroscopy
• Dynamic Nuclear Polarization with Single Electron Spins
• Tunnel magnetoresistance of quantum dots coupled to ferromagnetic leads in the sequential and cotunneling regimes
• Current and power spectrum in a magnetic tunnel device with an atomic size spacer
• Positive cross-correlations due to Dynamical Channel-Blockade in a three-terminal quantum dot
• Disentangling the effects of spin-orbit and hyperfine interactions on spin blockade
• Shot noise in tunneling transport through molecules and quantum dots
• Electronic Transport in Single-Molecule Magnets on Metallic Surfaces
• Spin-transfer torque on a single magnetic adatom
• Gate-controlled spin-splitting in quantum dots with ferromagnetic leads in the Kondo regime
• Spin injection in a single metallic nanoparticle: a step towards nanospintronics
• Magnetic Switching of a Single Molecular Magnet due to Spin-Polarized Current
• Spin transport through a single self-assembled InAs quantum dot with ferromagnetic leads
• Spin Inelastic Electron Tunneling Spectroscopy on Local Spin Adsorbed on Surface
• Probing level renormalization by sequential transport through double quantum dots
• Ferromagnetic proximity effect in F-QDot-S device
• Using single quantum states as spin filters to study spin polarization in ferromagnets
• Kondo effect in a semiconductor quantum dot coupled to ferromagnetic electrodes
• Electric-field control of tunneling magnetoresistance effect in a Ni/InAs/Ni quantum-dot spin valve
• Nonequilibrium Kondo Effect in a Quantum Dot Coupled to Ferromagnetic Leads
• Single Electron Transport in electrically tunable nanomagnets
• Frequency-Dependent Current Noise through Quantum-Dot Spin Valves
• Kondo quantum dot coupled to ferromagnetic leads: Numerical renormalization group study
• Theory of spin-polarized scanning tunneling microscopy applied to local spins
• Self-Polarization and Dynamical Cooling of Nuclear Spins in Double Quantum Dots
• Adiabatic charge and spin pumping through quantum dots with ferromagnetic leads
• Theory of Inelastic Electron Tunneling from a Localized Spin in the Impulsive Approximation
• Zero-bias anomaly in cotunneling transport through quantum-dot spin valves
• Electrically-Driven Reverse Overhauser Pumping of Nuclear Spins in Quantum Dots
• Magnetoresistance of a quantum dot with spin-active interfaces
• Tunable dynamical channel blockade in double-dot Aharonov-Bohm interferometers
• Cotunneling through quantum dots coupled to magnetic leads: zero-bias anomaly for non-collinear magnetic configurations
• Spin-induced charge correlations in transport through interacting quantum dots with ferromagnetic leads
• Probing the exchange field of a quantum-dot spin valve by a superconducting lead
• Exchange-controlled single-electron-spin rotations in quantum dots
• Kondo effect with non collinear polarized leads: a numerical renormalization group analysis
• Non-equilibrium current and noise in inelastic tunneling through a magnetic atom
• Angular Conductance Resonances of Quantum Dots Non-Collinearly Coupled to Ferromagnetic Leads
• Quantum Tunneling of Magnetization in Single Molecular Magnets Coupled to Ferromagnetic Reservoirs
• Current and Shot Noise Measurements in a Carbon Nanotube-Based Spin Diode
• Shot noise spectrum of artificial Single Molecule Magnets: measuring spin-relaxation times via the Dicke effect
• Influence of spin waves on transport through a quantum-dot spin valve
• Single Spin Transport Spectroscopy - Current Blockade and Spin Decay
• Cotunneling through two-level quantum dots weakly coupled to ferromagnetic leads
• Transport through two-level quantum dots weakly coupled to ferromagnetic leads
• Low-frequency noise in tunneling through a single spin

Cited by in corpus (35)

• Coherence-enhanced constancy of a quantum thermoelectric generator
• Spintronic magnetic anisotropy
• Electronic waiting-time distribution of a quantum-dot spin valve
• The formation of nonequilibrium steady states in interacting double quantum dots: When coherences dominate the charge distribution
• First-passage times in renewal and nonrenewal systems
• Transport mirages in single-molecule devices
• QmeQ 1.0: An open-source Python package for calculations of transport through quantum dot devices
• Nonrenewal statistics in transport through quantum dots
• Effects of Transverse Magnetic Anisotropy on Current-Induced Spin Switching
• Iterative path integral summation for nonequilibrium quantum transport
• Waiting time distribution revealing the internal spin dynamics in a double quantum dot
• Spin resonance without spin splitting
• Switching of a Quantum Dot Spin Valve by Single Molecule Magnets
• Coherent dynamics in stochastic systems revealed by full counting statistics
• Spin quadrupoletronics: moving spin anisotropy around
• Duality for open fermion systems: energy-dependent weak coupling and quantum master equations
• Cooling a magnetic nanoisland by spin-polarized currents
• Full Counting statistics of level renormalization in electron transport through double quantum dots
• Theory of spin pumping through an interacting quantum dot tunnel coupled to a ferromagnet with time-dependent magnetization
• Extracting electronic many-body correlations from local measurements with artificial neural networks
• Limit-Cycles and Chaos in the Current Through a Quantum Dot
• Electronic statistics-on-demand: bunching, anti-bunching, positive and negative correlations in a molecular spin-valve
• Full counting statistics of renormalized dynamics in open quantum transport system
• Adiabatic pumping through an interacting quantum dot with spin-orbit coupling
• Violation of Onsager's theorem in approximate master equation approaches
• Spin-vibronics in interacting nonmagnetic molecular nanojunctions
• Theory of transport through noncollinear single-electron spin-valve transistors
• Renormalization-group analysis of a spin-1 Kondo dot: Non-equilibrium transport and relaxation dynamics
• Transport through single-level systems: Spin dynamics in the nonadiabatic regime
• Semiclassical spin-spin dynamics and feedback control in transport through a quantum dot
• Transport and semiclassical dynamics of coupled quantum dots interacting with a local magnetic moment
• Transport of spin-anisotropy without spin currents
• Vibration-induced modulation of magnetic anisotropy in a magnetic molecule
• Current fluctuations of noncollinear single-electron spin-valve transistors
• Revealing the internal spin dynamics in a double quantum dot by periodic voltage modulation