Zero-field Kondo splitting and quantum-critical transition in double quantum dots

Abstract

Double quantum dots offer unique possibilities for the study of many-body correlations. A system containing one Kondo dot and one effectively noninteracting dot maps onto a single-impurity Anderson model with a structured (nonconstant) density of states. Numerical renormalization-group calculations show that while band filtering through the resonant dot splits the Kondo resonance, the singlet ground state is robust. The system can also be continuously tuned to create a pseudogapped density of states and access a quantum critical point separating Kondo and non-Kondo phases.

4 pages, 4 figures; Accepted for publication in Physical Review Letters

References in corpus (25)

• Kondo Physics in a Single Electron Transistor
• A Tunable Kondo Effect in Quantum Dots
• Tunable Non-local Spin Control in a Coupled Quantum Dot System
• Renormalization-group study of Anderson and Kondo impurities in gapless Fermi systems
• Out-of-equilibrium Kondo effect in Double Quantum Dots
• Transition between Quantum States in a Parallel-Coupled Double-Quantum-Dot
• The Kondo Box: A Magnetic Impurity in an Ultrasmall Metallic Grain
• Anderson impurity in pseudo-gap Fermi systems
• Self-contained Kondo effect in single molecules
• Phase transitions in the pseudogap Anderson and Kondo models: Critical dimensions, renormalization group, and local-moment criticality
• RKKY and magnetic field interactions in coupled Kondo quantum dots
• Towards an Explanation of the Mesoscopic Double-Slit Experiment: a new model for charging of a Quantum Dot
• Probing spin and orbital Kondo effects with a mesoscopic interferometer
• Quantum phase transition in capacitively coupled double quantum dots
• Behavior of magnetic impurities in gapless Fermi systems
• Quantum phase transition in a two-channel-Kondo quantum dot device
• Detecting the Kondo screening cloud in conductance measurements on quantum dots
• Mirages and many-body effects in quantum corrals
• Transport through quantum dots in mesoscopic circuits
• Spectroscopy of the Kondo Problem in a Box
• Prediction of Ferromagnetic Correlations in Coupled Double-Level Quantum Dots
• Double-dot charge qubit and transport via dissipative cotunneling
• Transport Spectroscopy of a Kondo quantum dot coupled to a finite size grain
• Spectral densities of Kondo impurities in nanoscopic systems
• Symmetric Anderson impurity model with a narrow band

Cited by in corpus (63)

• The numerical renormalization group method for quantum impurity systems
• What lurks below the last plateau: Experimental studies of the 0.7 x 2e^2/h conductance anomaly in one-dimensional systems
• Fano-Kondo effect in side-coupled double quantum dots at finite temperatures and the importance of the two-stage Kondo screening
• Probing Magnetic Excitations and Correlations in Single and Coupled Spin Systems with Scanning Tunneling Spectroscopy
• Quantum phase transitions in the systems of parallel quantum dots
• Kondo-Dicke resonances in electronic transport through triple quantum dots
• On the Zero-Bias Anomaly in Quantum Wires
• Many-body electronic structure and Kondo properties of cobalt-porphyrin molecules
• Transport Spectroscopy of a Spin-Coherent Dot-Cavity System
• Kondo physics and dissipation: A numerical renormalization-group approach to Bose-Fermi Kondo models
• Nonequilibrium dynamics of a singlet-triplet Anderson impurity near the quantum phase transition
• Universality and the zero-bias conductance of the single-electron transistor
• Universal zero-bias conductance for the single electron transistor. II: Comparison with numerical results
• Suppression of Kondo screening by the Dicke effect in multiple quantum dots
• Perfect spin polarization in T-shaped double quantum dots due to the spin-dependent Fano effect
• Spin-polarized conductance in double quantum dots: Interplay of Kondo, Zeeman and interference effects
• Tunable pseudogap Kondo effect and quantum phase transitions in Aharonov-Bohm interferometers
• Spectral density of an interacting dot coupled indirectly to conducting leads
• Crossover between two different Kondo couplings in side-coupled double quantum dots
• Critical Kondo destruction in a pseudogap Anderson model: scaling and relaxational dynamics
• Theoretical study of electronic transport through a small quantum dot with a magnetic impurity
• Kondo effect in graphene with Rashba spin-orbit coupling
• Finite-temperature conductance signatures of quantum criticality in double quantum dots
• Manipulating Majorana zero modes in double quantum dots
• Engineering the Kondo and Fano effects in double quantum dots
• Capacitively coupled double quantum dot system in the Kondo regime
• Disorder-mediated Kondo effect in graphene
• Universal zero-bias conductance through a quantum wire side-coupled to a quantum dot
• Features of spin-charge separation in the equilibrium conductance through finite rings
• Kondo effects and shot noise enhancement in a laterally coupled double quantum dot
• Thermal dependence of the zero-bias conductance through a nanostructure
• Spin susceptibility of Anderson impurities in arbitrary conduction bands
• Origins of conductance anomalies in a p-type GaAs quantum point contact
• Long-range spin-coherence in a strongly-coupled all electronic dot-cavity system
• Suppressed Kondo screening in two-dimensional altermagnets
• Signatures of quantum phase transitions in parallel quantum dots: Crossover from local-moment to underscreened spin-1 Kondo physics
• Entanglement based observables for quantum impurities
• Validity of the local self-energy approximation: Application to coupled quantum impurities
• Quantum phase transitions in a pseudogap Anderson-Holstein model
• Conductance and Kondo Interference beyond Proportional Coupling
• Steady-state dynamics and effective temperatures of quantum criticality in an open system
• Quantum phase transitions in a resonant-level model with dissipation: Renormalization-group studies
• Transport and current noise characteristics of a T-shape double quantum dot system
• Kondo screening regimes in multi-Dirac and Weyl systems
• Quantum phase transition triggering magnetic BICs in graphene
• Entanglement Entropy Near Kondo-Destruction Quantum Critical Points
• From Kondo to local singlet state in graphene nanoribbons with magnetic impurities
• Electrostatic control of quantum dot entanglement induced by coupling to external reservoirs
• Spin selective transport through Aharonov-Bohm and Aharonov-Casher triple quantum dot systems
• Scanning tunneling microscopy of adsorbed molecules on metalic surfaces for nearly localized atomic states
• Quantum phase transitions into Kondo states in bilayer graphene
• Transport Properties of Multiple Quantum Dots Arranged in Parallel: Results from the Bethe Ansatz
• Local magnetic moments and electronic transport in closed loop quantum dot systems: a case of quadruple quantum dot ring at and away from equilibrium
• An analytic expression for the optical exciton transition rates in the polaron frame
• The RKKY Interaction and the Nature of the Ground State of Double Dots in Parallel
• Transmission in double quantum dots in the Kondo regime: Quantum-critical transitions and interference effects
• Kondo effect in transport through Aharonov-Bohm and Aharonov-Casher interferometers
• Zero-field splitting of the Kondo resonance and quantum criticality in triple quantum dots
• Functional renormalization group study of parallel double quantum dots: Effects of asymmetric dot-lead couplings
• Quantum criticality in the spin-isotropic pseudogap Bose-Fermi Kondo model: entropy, scaling, and the g-theorem
• Zero temperature conductance of parallel T-shape double quantum dots
• Parity oscillations of Kondo temperature in a single molecule break junction
• Spectroscopic analysis of finite size effects around a Kondo quantum dot