Universal Fermi liquid crossover and quantum criticality in a mesoscopic device

Abstract

Quantum critical systems derive their finite temperature properties from the influence of a zero temperature quantum phase transition. The paradigm is essential for understanding unconventional high-Tc superconductors and the non-Fermi liquid properties of heavy fermion compounds. However, the microscopic origins of quantum phase transitions in complex materials are often debated. Here we demonstrate experimentally, with support from numerical renormalization group calculations, a universal crossover from quantum critical non-Fermi liquid behavior to distinct Fermi liquid ground states in a highly controllable quantum dot device. Our device realizes the non-Fermi liquid two-channel Kondo state, based on a spin-1/2 impurity exchange-coupled equally to two independent electronic reservoirs. Arbitrarily small detuning of the exchange couplings results in conventional screening of the spin by the more strongly coupled channel for energies below a Fermi liquid scale T*. We extract a quadratic dependence of T* on gate voltage close to criticality and validate an asymptotically exact description of the universal crossover between strongly correlated non-Fermi liquid and Fermi liquid states.

Text and supplementary information. Text: 14 pages, 3 figures. Supplementary information: 11 pages, 6 figures

References in corpus (19)

• The numerical renormalization group method for quantum impurity systems
• Quantum Criticality in Heavy Fermion Metals
• Observation of the two-channel Kondo effect
• Sum-rule Conserving Spectral Functions from the Numerical Renormalization Group
• Quantum Phase Transition in a Resonant Level Coupled to Interacting Leads
• Density matrix numerical renormalization group for non-Abelian symmetries
• Universal low-temperature crossover in two-channel Kondo models
• Theory of inelastic scattering from quantum impurities
• Transport through a quantum dot with SU(4) Kondo entanglement
• Tunable Kondo physics in a carbon nanotube double quantum dot
• SU(3) Anderson impurity model: A numerical renormalization group approach exploiting non-Abelian symmetries
• Coulomb blockade and Non-Fermi-liquid behavior in quantum dots
• Enhancement of the Two-channel Kondo Effect in Single-Electron boxes
• Wide-band current preamplifier for conductance measurements with large input capacitance
• Dynamical conductance in the two-channel Kondo regime of a double dot system
• Manual for the Flexible DM-NRG code
• Prediction of the capacitance lineshape in two-channel quantum dots
• Two-Channel Kondo Effects in Al/AlO${}_x$/Sc Planar Tunnel Junctions
• Transmission phase shifts of Kondo impurities

Cited by in corpus (72)

• Tunable Quantum Criticality and Super-ballistic Transport in a `Charge' Kondo Circuit
• Many-Body Quantum Electrodynamics Networks: Non-Equilibrium Condensed Matter Physics with Light
• Fractional entropy of multichannel Kondo systems from conductance-charge relations
• Primary thermometry triad at 6 mK in mesoscopic circuits
• Driven dissipative dynamics and topology of quantum impurity systems
• Quantum simulation of an exotic quantum critical point in a two-site charge Kondo circuit
• Kondo blockade due to quantum interference in single-molecule junctions
• Anyons in Multichannel Kondo Systems
• Tunable resistivity exponents in the metallic phase of epitaxial nickelates
• Entanglement structure of the two-channel Kondo model
• Observation of the frozen charge of a Kondo resonance
• Universality and scaling in a charge two-channel Kondo device
• Circuit Quantum Simulation of a Tomonaga-Luttinger Liquid with an Impurity
• Evolution and universality of Two-stage Kondo effect in single manganese phthalocyanine molecule transistors
• Kondo-based Qubits for Topological Quantum Computation
• Scaling of tripartite entanglement at impurity quantum phase transitions
• Quantum Monte Carlo in the steady-state
• Charge Fractionalization in a Kondo Device
• Entropy measurement of a strongly coupled quantum dot
• Wiedemann-Franz law in a non-Fermi liquid and Majorana central charge: Thermoelectric transport in a two-channel Kondo system
• Many-terminal Majorana island: from Topological to Multi-Channel Kondo Model
• Two-color Fermi liquid theory for transport through a multilevel Kondo impurity
• SO(5) non-Fermi liquid in a Coulomb box device
• Realistic protocol to measure entanglement at finite temperatures
• Topological Majorana Two-Channel Kondo Effect
• Oxygen vacancy-driven orbital multichannel Kondo effect in Dirac nodal line metals IrO2 and RuO2
• Manipulating Non-Abelian Anyons in a Chiral Multichannel Kondo Model
• Two-sites quantum island in the quasi-ballistic regime
• Multichannel charge Kondo effect and non-Fermi liquid fixed points in conventional and topological superconductor islands
• Information scrambling at an impurity quantum critical point
• Observation of orbital two-channel Kondo effect in a ferromagnetic L10-MnGa film
• $6\pi$ Josephson effect in Majorana box devices
• Non-Fermi-liquid behavior in quantum impurity models with superconducting channels
• Multi-impurity chiral Kondo model: correlation functions and anyon fusion rules
• A thermally driven out-of-equilibrium two-impurity Kondo system
• Scaling laws of the Kondo problem at finite frequency
• Tuning spin one channel to exotic orbital two-channel Kondo effect in ferrimagnetic composites of LaNiO3 and CoFe2O4
• The $SU(4)-SU(2)$ crossover and spin filter properties of a double quantum dot nanosystem
• Hierarchical entanglement shells of multichannel Kondo clouds
• Variational approach to the dynamics of dissipative quantum impurity models
• Topological symplectic Kondo effect
• Multichannel topological Kondo effect
• SO(5) critical point in a spin-flavor Kondo device -- Bosonization and refermionization solution
• Microwave Scattering in the Subohmic Spin-Boson Systems of Superconducting Circuits
• Many-body quantum interference route to the two-channel Kondo effect: Inverse design for molecular junctions and quantum dot devices
• Flavor fluctuations in 3-level quantum dots: Generic SU(3)-Kondo fixed point in equilibrium and non-Kondo fixed points in nonequilibrium
• Quantum Criticality in Resonant Andreev Conduction
• Stabilization of a Majorana Zero Mode through Quantum Frustration
• Nonequilibrium Quantum Critical Steady State: Transport Through a Dissipative Resonant Level
• Topological Kondo effect with spinful Majorana fermions
• Topological Quantum Computation on a Chiral Kondo Chain
• Quantum critical phenomena in heat transport via a two-state system
• Nonmonotonic buildup of spin-singlet correlations in a double quantum dot
• Quantum noise in carbon nanotubes as a probe of correlations in the Kondo regime
• One- and two-channel Kondo model with logarithmic Van Hove singularity: a numerical renormalization group solution
• Order parameter for the multichannel Kondo model at quantum criticality
• Quantum work statistics across a critical point: full crossover from sudden quench to the adiabatic limit
• Critical Quantum Sensing: a tutorial on parameter estimation near quantum phase transitions
• Electric and heat transport in a charge two-channel Kondo device
• Probing single-electron scattering through a non-Fermi liquid charge-Kondo device
• Frustration shapes multi-channel Kondo physics: a star graph perspective
• Quantum criticality and formation of a singular Fermi liquid in the attractive SU(N > 2) Anderson model
• Exactly solvable quantum impurity model with inverse-square interactions
• Universal Crossover in the Three-Channel Charge Kondo Model at High Transparency
• Relevance of Anisotropy in the Kondo Effect: Lessons From the Symplectic Case
• Natural orbitals renormalization group approach to a spin-1/2 impurity interacting with two helical liquids
• Electrical Transport of perpendicularly magnetized L10-MnGa and MnAl films
• Two-channel charge-Kondo physics in graphene quantum dots
• Kondo effect in Lieb's ferrimagnetic system on the T-shaped bipartite lattice
• Quantum impurity models from conformal field theory
• A mesoscopic device for a realization of the Topological Kondo effect
• On-chip quantum sensing of Kondo spins in a high-mobility quasi-one-dimensional nanoconstriction