Quantum Phase Transition in a Multi-Level Dot

Abstract

We discuss electronic transport through a lateral quantum dot close to the singlet-triplet degeneracy in the case of a single conduction channel per lead. By applying the Numerical Renormalization Group, we obtain rigorous results for the linear conductance and the density of states. A new quantum phase transition of the Kosterlitz-Thouless type is found, with an exponentially small energy scale $T^{\ast }$ close to the degeneracy point. Below $T^{\ast }$, the conductance is strongly suppressed, corresponding to a universal dip in the density of states. This explains recent transport measurements.

4 pages, 5 eps figures, published version

References in corpus (2)

• Revival of the Kondo effect
• Kondo effect in real quantum dots

Cited by in corpus (93)

• The numerical renormalization group method for quantum impurity systems
• Quantum phase transitions
• Advances and challenges in single-molecule electron transport
• Quantum phase transition in a single-molecule quantum dot
• Flux-Dependent Level Attraction in Double-Dot Aharonov-Bohm Interferometers
• Two-stage Kondo effect in a quantum dot at high magnetic field
• Strongly correlated regimes in a double quantum-dot device
• Cotunneling Spectroscopy in Few-Electron Quantum Dots
• Multi-impurity Anderson model for quantum dots coupled in parallel
• Singlet-triplet transition in a single-electron transistor at zero magnetic field
• Quantum phase transitions in the Bose-Fermi Kondo model
• Quantum phase transition in capacitively coupled double quantum dots
• Interference in interacting quantum dots with spin
• Singular Dynamics of Underscreened Magnetic Impurity Models
• Enhanced Conductance Through Side-Coupled Double Quantum Dots
• Unified description of correlations in double quantum dots
• Kondo quantum dot coupled to ferromagnetic leads: Numerical renormalization group study
• Universal transport signatures in two-electron molecular quantum dots: gate-tunable Hund's rule, underscreened Kondo effect and quantum phase transitions
• Singlet-Triplet Transition in lateral Quantum Dots: A Numerical Renormalization Group Study
• Quantum phase transitions in the systems of parallel quantum dots
• Correlated electron physics in multilevel quantum dots: phase transitions, transport, and experiment
• Singlet-triplet transition in a lateral quantum dot
• Singular conductance of a spin 1 quantum dot
• Local moment formation and Kondo screening in impurity trimers
• Enhancement of Kondo effect in multilevel quantum dots
• Two-stage Kondo effect in side-coupled quantum dots: Renormalized perturbative scaling theory and Numerical Renormalization Group analysis
• Interference Effects in the Conductance of Multi-Level Quantum Dots
• Evolution and universality of Two-stage Kondo effect in single manganese phthalocyanine molecule transistors
• Transport through quantum dots in mesoscopic circuits
• Two-stage Kondo effect in a four-electron artificial atom
• Non-equilibrium Kondo effect in asymmetrically coupled quantum dot
• Nonequilibrium dynamics of a singlet-triplet Anderson impurity near the quantum phase transition
• Kondo effect in coupled quantum dots with RKKY interaction: Finite temperature and magnetic field effects
• Nonequilibrium Spin Dynamics in the Ferromagnetic Kondo Model
• Unexpected Conductance Dip in the Kondo Regime of Linear Arrays of Quantum Dots
• Kondo Effect in a Many-Electron Quantum Ring
• Ground state of the parallel double quantum dot system
• Kondo effect in graphene with Rashba spin-orbit coupling
• Quantum Transport Through a Stretched Spin--1 Molecule
• Finite-temperature conductance signatures of quantum criticality in double quantum dots
• Prediction of Ferromagnetic Correlations in Coupled Double-Level Quantum Dots
• Common non-Fermi liquid phases in quantum impurity physics
• Electron Transport through T-Shaped Double-Dots System
• Resonance Kondo Tunneling through a Double Quantum Dot at Finite Bias
• Josephson effect through a multilevel dot near a singlet-triplet transition
• Two-color Fermi liquid theory for transport through a multilevel Kondo impurity
• Inducing spin-correlations and entanglement in a double quantum dot through non-equilibrium transport
• Dynamical conductance in the two-channel Kondo regime of a double dot system
• Iron phthalocyanine on Au(111) is a "non-Landau" Fermi liquid
• Flux-quantum-modulated Kondo conductance in a multielectron quantum dot
• Nonequilibrium Kondo Effect in a Multi-level Quantum Dot near singlet-triplet transition
• Magnetic Polarization Currents in Double Quantum Dot Devices
• Quantum impurity models of noisy qubits
• Tunable Quantum Phase Transitions in a Resonant Level Coupled to Two Dissipative Baths
• Magnetic field effects in few-level quantum dots: theory, and application to experiment
• Coherence and Coulomb blockade in single electron devices: a unified treatment of interaction effects
• Dynamics of capacitively coupled double quantum dots
• Tunable Kondo screening in a quantum dot device
• Kondo Shuttling in Nanoelectromechanical Single-Electron Transistor
• Orbital fluctuations and strong correlations in quantum dots
• Coulomb blockade and Kondo effect in the electronic structure of Hubbard molecules connected to metallic leads: a finite-temperature exact-diagonalization study
• Kondo effect and singlet-triplet splitting in coupled quantum dots in a magnetic field
• Phase transition, spin-charge separation, and spin filtering in a quantum dot
• Signatures of quantum phase transitions in parallel quantum dots: Crossover from local-moment to underscreened spin-1 Kondo physics
• Kondo effect in binuclear metal-organic complexes with weakly interacting spins
• Quantum phase transitions in a pseudogap Anderson-Holstein model
• Zero-bias anomaly and Kondo-assisted quasi-ballistic 2D transport
• Temperature dependence of electronic transport through molecular magnets in the Kondo regime
• Negative differential conductance induced by electronic correlation in a double quantum-dot molecule
• Correlation Effects in Side-Coupled Quantum Dots
• Variational approach to the dynamics of dissipative quantum impurity models
• Realistic quantum critical point in one-dimensional two-impurity models
• Dynamical and point symmetry of the Kondo effect in triangular quantum dot
• Swapping entangled Kondo resonances in parallel-coupled double quantum dots
• Quantum phase transition in a realistic double-quantum-dot system
• Flavor fluctuations in 3-level quantum dots: Generic SU(3)-Kondo fixed point in equilibrium and non-Kondo fixed points in nonequilibrium
• Exchange interaction between two quantum dots coupled through a superconducting island
• Quantum phase transition and underscreened Kondo effect in electron transport through parallel double quantum dots
• Spin excitations in an all-organic double quantum dot molecule
• Three-orbital Kondo effect in single quantum dot system with plural electrons
• Magnetically-Tuned Kondo Effect in a Molecular Double Quantum Dot: Role of the Anisotropic Exchange
• Mesoscopic features in the transport properties of a Kondo-correlated quantum dot in a magnetic field
• Observation of Kondo Effect in a Quadruple Quantum Dots
• Kondo Effect in Mesoscopic Quantum Dots
• Suppression of Kondo-assisted co-tunneling in a spin-1 quantum dot with Spin-Orbit interaction
• Quantum criticality in Kondo quantum dot coupled to helical edge states of interacting 2D topological insulators
• Underscreened Kondo impurities in a Luttinger liquid
• Zero-field splitting of the Kondo resonance and quantum criticality in triple quantum dots
• Effects of electron-phonon coupling in the Kondo regime of a two-orbital molecule
• Identifying an effective model for the two-stage-Kondo regime: Numerical renormalization group results
• Zero-Bias Conductance Through Side-Coupled Double Quantum Dots
• Perturbative theory of the non-equilibrium singlet-triplet transition
• Functional renormalization group approach to the singlet-triplet transition in quantum dots