Two-channel Kondo physics in two-impurity Kondo models

Abstract

We consider the non-Fermi liquid quantum critical state of the spin-S two-impurity Kondo model, and its potential realization in a quantum dot device. Using conformal field theory (CFT) and the numerical renormalization group (NRG), we show the critical point to be identical to that of the two-channel Kondo model with additional potential scattering, for any spin-S. Distinct conductance signatures are shown to arise as a function of device asymmetry; with the `smoking gun' square-root behavior, commonly believed to arise at low-energies, dominant only in certain regimes.

4.5 pages (with 3 figures) + 9 pages (with 4 figures) supplementary material

References in corpus (6)

• The numerical renormalization group method for quantum impurity systems
• Observation of the two-channel Kondo effect
• A Tunable Two-impurity Kondo system in an atomic point contact
• Quantum criticality in a double quantum-dot system
• Quantum phase transition in a two-channel-Kondo quantum dot device
• Correlated electron physics in multilevel quantum dots: phase transitions, transport, and experiment

Cited by in corpus (50)

• An order parameter for impurity systems at quantum criticality
• Probing Magnetic Excitations and Correlations in Single and Coupled Spin Systems with Scanning Tunneling Spectroscopy
• Generalized Wilson Chain for solving multichannel quantum impurity problems
• Universal low-temperature crossover in two-channel Kondo models
• Orbital two-channel Kondo effect in epitaxial ferromagnetic L10-MnAl films
• Kondo blockade due to quantum interference in single-molecule junctions
• Conductance fingerprint of Majorana fermions in the topological Kondo effect
• Anyons in Multichannel Kondo Systems
• Local moment formation and Kondo screening in impurity trimers
• Scaling of tripartite entanglement at impurity quantum phase transitions
• Multiparameter critical quantum metrology with impurity probes
• Resolution of Entropy $\ln \sqrt{2}$ by Ordering in Two-Channel Kondo Lattice
• Nonequilibrium critical scaling from quantum thermodynamics
• Multiple magnetic impurities on surfaces: Scattering and quasiparticle interference
• SO(5) non-Fermi liquid in a Coulomb box device
• Oxygen vacancy-driven orbital multichannel Kondo effect in Dirac nodal line metals IrO2 and RuO2
• Effective low-energy description of the two impurity Anderson model: RKKY interaction and quantum criticality
• Two-sites quantum island in the quasi-ballistic regime
• Seebeck effect on a weak link between Fermi and non-Fermi liquids
• Non-Fermi liquid behavior in transport through Co doped Au chains
• Probing dynamics of Majorana fermions in quantum impurity systems
• Screening mechanisms in magnetic nanostructures
• Topological quantum phase transition between Fermi liquid phases in an Anderson impurity model
• Entanglement entropy and boundary renormalization group flow - exact results in the Ising universality class
• Non-Fermi liquid behaviour in non-equilibrium transport through Co doped Au chains connected to four-fold symmetric leads
• Fate of the Kondo Effect and Impurity Quantum Phase Transitions Through the Lens of Fidelity Susceptibility
• Variational approach to the dynamics of dissipative quantum impurity models
• Frustrated Kondo impurity triangle: A simple model of deconfinement
• SO(5) critical point in a spin-flavor Kondo device -- Bosonization and refermionization solution
• Many-body quantum interference route to the two-channel Kondo effect: Inverse design for molecular junctions and quantum dot devices
• Kondo behavior and conductance through $3d$ impurities in gold chains doped with oxygen
• Metrological symmetries in singular quantum multi-parameter estimation
• Spin current Kondo effect in frustrated Kondo systems
• Unusual Kondo physics in a Co impurity atom embedded in noble-metal chains
• Thermoelectric transport across a tunnel contact between two charge Kondo circuits: beyond perturbation theory
• Chiral numerical renormalization group
• Non-Hermitian Numerical Renormalization Group: Solution of the non-Hermitian Kondo model
• Local magnetic moments and electronic transport in closed loop quantum dot systems: a case of quadruple quantum dot ring at and away from equilibrium
• Asymmetry effects on the phases of RKKY-coupled two-impurity Kondo systems
• Two channel orbital Kondo effect in quantum dot with SO(n) symmetry
• Double Fu-teleportation and anomalous Coulomb blockade in a Majorana-hosted superconducting island
• Quantum criticality in Kondo quantum dot coupled to helical edge states of interacting 2D topological insulators
• Frustration shapes multi-channel Kondo physics: a star graph perspective
• Probing single-electron scattering through a non-Fermi liquid charge-Kondo device
• Magnetization curves of deposited finite spin chains
• Quantum criticality of the two-channel pseudogap Anderson model: Universal scaling in linear and non-linear conductance
• Transport properties of a multichannel Kondo dot in a magnetic field
• Two-channel charge-Kondo physics in graphene quantum dots
• Kondo Screening and Indirect Magnetic Exchange through a Conventional Superconductor Studied by the Density-Matrix Renormalization Group
• Unraveling screening mechanisms in Kondo impurities using an NRG-MPS-based method