Breakdown of heavy quasiparticles in a honeycomb Kondo lattice: A quantum Monte Carlo study

Abstract

We show that for the half-filled Kondo lattice model on the honeycomb lattice a Kondo breakdown occurs at small Kondo couplings $J_k$ within the magnetically ordered phase. Our conclusions are based on auxiliary field quantum Monte Carlo simulations of the so-called composite fermion spectral function. Within a U(1) gauge theory formulation of the Kondo model, it becomes apparent that a Higgs mechanism dictates the weight of the resonance in the spectral function. For the honeycomb lattice we observe that for small $J_k$ the quasiparticle pole gives way to incoherent spectral weight but it remains well defined for the square lattice. Our result provides an explicit example where the magnetic transition and the breakdown of heavy quasiparticles are detached as observed in Yb(Rh${}_{0.93}$Co${}_{0.07}$)${}_2$Si${}_2$ [Friedemann et al., Nat. Phys. \textbf{5}, 465 (2009)].

arXiv comment6.5 pages, 5 figures plus supplemental material (11 pages, 9 figures)

References in corpus (44)

• Locally critical quantum phase transitions in strongly correlated metals
• How do Fermi liquids get heavy and die?
• Hall-effect evolution across a heavy-fermion quantum critical point
• Fractionalized Fermi liquids
• Topological approach to Luttinger's theorem and the Fermi surface of a Kondo lattice
• Kondo effect in a magnetic field and the magnetoresistivity of Kondo alloys
• A sufficient condition for the absence of the sign problem in the fermionic quantum Monte-Carlo algorithm
• Coherence scale of the Kondo lattice
• Fermi-surface collapse and dynamical scaling near a quantum critical point
• Phase transitions in the pseudogap Anderson and Kondo models: Critical dimensions, renormalization group, and local-moment criticality
• The Physics of Kondo Impurities in Graphene
• Quantum Monte Carlo simulations of the half-filled two-dimensional Kondo lattice model
• Bootstrapping Heisenberg Magnets and their Cubic Instability
• Electron Cotunneling into a Kondo Lattice
• Spin and charge dynamics of the ferromagnetic and antiferromagnetic two-dimensional half-filled Kondo lattice model
• Orbital-selective Mott transitions: Heavy fermions and beyond
• Orthogonal Metals: The simplest non-Fermi liquids
• Fermi Surface Reconstruction without Breakdown of Kondo Screening at Quantum Critical Point
• Parton theory of magnetic polarons: Mesonic resonances and signatures in dynamics
• Orbital-Exchange and Fractional Quantum Number Excitations in an f-electron Metal Yb${}_2$Pt${}_2$Pb
• Singular charge fluctuations at a magnetic quantum critical point
• Coexisting Kondo singlet state with antiferromagnetic long-range order: A possible ground state for Kondo insulators
• Evidence for composite nature of quasiparticles in the 2D t-J model
• Inducing Kondo Screening of Vacancy Magnetic Moments in Graphene with Gating and Local Curvature
• Quantum Critical Transition and Kondo Screening of Magnetic Moments in Graphene
• Theory of inelastic scattering from quantum impurities
• Quantum Monte Carlo Simulation of Frustrated Kondo Lattice Models
• Fermi surface and antiferromagnetism in the Kondo lattice: an asymptotically exact solution in d>1 Dimensions
• Bond operator mean field theory of the half filled Kondo lattice model
• Competition between Kondo effect and RKKY physics in graphene magnetism
• Quantum critical point in the Kondo-Heisenberg model on the honeycomb lattice
• Zooming in on heavy fermions in Kondo lattice models
• Theory of Scanning Tunneling Spectroscopy: from Kondo Impurities to Heavy Fermion Materials
• Emergent Coherent Lattice Behavior in Kondo Nanosystems
• Kondo breakdown in a spin-1/2 chain of adatoms on a Dirac semimetal
• Fermi-surface reconstruction without symmetry breaking
• Phase diagram and dynamics of the SU($\mathbf{N}$) symmetric Kondo lattice model
• Fractionalized Metal in a Falicov-Kimball Model
• Kondo Breakdown via Fractionalization in a Frustrated Kondo Lattice Model
• Emergence of Kondo resonance in graphene intercalated with cerium
• Luttinger sum rules and spin fractionalization in the SU(N) Kondo Lattice
• Exploring the Kondo effect of an extended impurity with chains of Co adatoms in a magnetic field
• Antiferromagnetic phase of the Kondo-insulator
• Half-filled Kondo lattice on the honeycomb lattice

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