Measurements of Kondo and spin splitting in single-electron transistors

Abstract

We measure the spin splitting in a magnetic field $B$ of localized states in single-electron transistors using a new method, inelastic spin-flip cotunneling. Because it involves only internal excitations, this technique gives the most precise value of the Zeeman energy $Δ= \ZeemanE$. In the same devices we also measure the splitting with $B$ of the Kondo peak in differential conductance. The Kondo splitting appears only above a threshold field as predicted by theory. However, the magnitude of the Kondo splitting at high fields exceeds $2 \ZeemanE$ in disagreement with theory.

arXiv commentReplaced with version published in Phys. Rev. Lett

References in corpus (12)

• Kondo Physics in a Single Electron Transistor
• A Tunable Kondo Effect in Quantum Dots
• Low Temperature Transport through a Quantum Dot: The Anderson Model out of Equilibrium
• From the Kondo Regime to the Mixed-Valence Regime in a Single-Electron Transistor
• Zeeman energy and spin relaxation in a one-electron quantum dot
• Kondo effect in a magnetic field and the magnetoresistivity of Kondo alloys
• Electron Cotunneling in a Semiconductor Quantum Dot
• Non-Equilibrium Transport through a Kondo-Dot in a Magnetic Field: Perturbation Theory and Poor Man's Scaling
• Spin and Polarized Current from Coulomb Blockaded Quantum Dots
• Singlet-triplet transition in a single-electron transistor at zero magnetic field
• Anomalous magnetic splitting of the Kondo resonance
• Gate-Controlled Electron Spin Resonance in a GaAs/AlGaAs Heterostructure

Cited by in corpus (86)

• Spins in few-electron quantum dots
• Driven coherent oscillations of a single electron spin in a quantum dot
• Semiconductor Spin Qubits
• The role of magnetic anisotropy in the Kondo effect
• Electric Field Controlled Magnetic Anisotropy in a Single Molecule
• Cotunneling Spectroscopy in Few-Electron Quantum Dots
• Kondo Effect in Electromigrated Gold Break Junctions
• Tunnel magnetoresistance of quantum dots coupled to ferromagnetic leads in the sequential and cotunneling regimes
• Observation of the SU(4) Kondo state in a double quantum dot
• Spin-1/2 Kondo effect in an InAs nanowire quantum dot: the Unitary limit, conductance scaling and Zeeman splitting
• Observation of the underscreened Kondo effect in a molecular transistor
• SU(4) and SU(2) Kondo Effects in Carbon Nanotube Quantum Dots
• Giant fluctuations and gate control of the g-factor in InAs Nanowire Quantum Dots
• Quantum Dot as a Spin--Current Diode
• Electronic Transport Spectroscopy of Carbon Nanotubes in a Magnetic Field
• Evolution of SU(4) Transport Regimes in Carbon Nanotube Quantum Dots
• Spin effects in single electron tunneling
• Spin-polarized current and shot noise in the presence of spin flip in a quantum dot via nonequilibrium Green's functions
• Kondo physics in tunable semiconductor nanowire quantum dots
• Probing Magnetic Excitations and Correlations in Single and Coupled Spin Systems with Scanning Tunneling Spectroscopy
• Effects of different geometries on the conductance, shot noise and tunnel magnetoresistance of 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
• Non-equilibrium Differential Conductance through a Quantum Dot in a Magnetic Field
• Resonant tunnelling features in the transport spectroscopy of quantum dots
• Zero-bias anomaly in cotunneling transport through quantum-dot spin valves
• Magnetic Field Effects on Quasiparticles in Strongly Correlated Local Systems
• Splitting of the Kondo resonance in anisotropic magnetic impurities on surfaces
• Coherent probing of excited quantum dot states in an interferometer
• Nonequilibrium magnetotransport through a quantum dot: An interpolative perturbative approach
• On the Zero-Bias Anomaly in Quantum Wires
• Cotunneling theory of inelastic STM spin spectroscopy
• Local Temperatures Out of Equilibrium
• Two-stage Kondo effect in a four-electron artificial atom
• Kondo-temperature dependence of the Kondo splitting in a single-electron transistor
• Cotunneling through quantum dots coupled to magnetic leads: zero-bias anomaly for non-collinear magnetic configurations
• At which magnetic field, exactly, does the Kondo resonance begin to split? A Fermi liquid description of the low-energy properties of the Anderson model
• Observation of spin-selective tunneling in SiGe nanocrystals
• Spin polarized current and shot noise in carbon nanotube quantum dot in the Kondo regime
• Meservey-Tedrow-Fulde effect in a quantum dot embedded between metallic and superconducting electrodes
• Perfect spin polarization in T-shaped double quantum dots due to the spin-dependent Fano effect
• Spin-orbital Kondo effect in a parallel double quantum dot
• Controlled complete suppression of single-atom inelastic spin and orbital cotunnelling
• Spin filling of a quantum dot derived from excited-state spectroscopy
• Effect of intrinsic spin relaxation on the spin-dependent cotunneling transport through quantum dots
• Cotunneling through a quantum dot coupled to ferromagnetic leads with noncollinear magnetizations
• Cotunneling current through quantum dots with phonon-assisted spin-flip processes
• Observing magnetic anisotropy in electronic transport through individual single-molecule magnets
• Nonequilibrium Zeeman-splitting in quantum transport through nanoscale junctions
• Zero-bias Anomaly of Quantum Point Contacts in the Low-Conductance Limit
• Magnetic Field Universality of the Kondo Effect Revealed by Thermocurrent Spectroscopy
• Kondo effect in quantum dots coupled to ferromagnetic leads with noncollinear magnetizations: effects due to electron-phonon coupling
• Quantitative determination of the discretization and truncation errors in the numerical renormalization-group calculations of spectral functions
• Analysis of low energy response and possible emergent SU(4) Kondo state in a double quantum dot
• Zero field splitting of heavy-hole states in quantum dots
• Conditions for observing emergent SU(4) symmetry in a double quantum dot
• Josephson junctions in double nanowires bridged by in-situ deposited superconductors
• Consistent bosonization-debosonization II: The two-lead Kondo problem and the fate of its non-equilibrium Toulouse point
• Tuning the electrically evaluated electron Lande g factor in GaAs quantum dots and quantum wells of different well widths
• Magnetic-Field-Induced Crossover to a Nonuniversal Regime in a Kondo Dot
• Out of equilibrium transport through an Anderson impurity: Probing scaling laws within the equation of motion approach
• G-factor of electrons in gate-defined quantum dots in a strong in-plane magnetic field
• Spin-polarized transport through weakly coupled double quantum dots in the Coulomb-blockade regime
• Observation of excited states in a p-type GaAs quantum dot
• Transport through a quantum dot subject to spin and charge bias: Kondo regime
• Transport through two-level quantum dots weakly coupled to ferromagnetic leads
• Cotunneling through two-level quantum dots weakly coupled to ferromagnetic leads
• The $SU(4)-SU(2)$ crossover and spin filter properties of a double quantum dot nanosystem
• Non-linear and dot-dependent Zeeman splitting in GaAs/AlGaAs quantum dot arrays
• Scaling of conductance through quantum dots with magnetic field
• Nonequilibrium Kondo effect in a graphene-coupled quantum dot in the presence of a magnetic field
• Analysis of the Kondo effect in ferromagnetic atomic-sized contacts
• Coplanar stripline antenna design for optically detected magnetic resonance on semiconductor quantum dots
• g-Tensor Control in Bent Carbon Nanotube Quantum Dots
• The scaling feature of the magnetic field induced Kondo-peak splittings
• Kondo effects in a C_60 single-molecule transistor
• Understanding Kondo Peak Splitting and the Mechanism of Cohernt Transport in a Single-Electron Transistor
• Kondo Effect in Mesoscopic Quantum Dots
• Non-Zeeman splitting for a spin-resolved STM with a Kondo adatom in a spin-polarized two-dimensional electron gas
• Competition between Kondo screening and quantum Hall edge reconstruction
• Inelastic Cotunneling Resonances in the Coulomb-Blockade Transport in Donor-Atom Transistors
• Magnetic Splitting of the Zero Bias Peak in a Quantum Point Contact with a Variable Aspect Ratio
• A quantitative study of spin-flip co-tunneling transport in a quantum dot
• Ac-cotunneling through an interacting quantum dot under a magnetic field
• Controlling inelastic cotunneling through an interacting quantum dot by a circularly-polarized field
• Supplementary Information: Quantum phase transition in a single-molecule quantum dot