Bond operator mean field theory of the half filled Kondo lattice model

Abstract

We present a bond-operator mean field theory for the Kondo lattice model at half filling in two (2D) and three (3D) dimensions. A continuous quantum phase transition from an antiferromagnetic to a spin-gapped singlet ground state is found at J/t=1.505 (1.833) in 2D (3D). Additionally we evaluate the quasiparticle dispersions as well as the staggered magnetic moment and provide a comparison with complementary numerical approaches.

4 pages, 3 figures

Cited by in corpus (27)

• Fermi Surface Reconstruction without Breakdown of Kondo Screening at Quantum Critical Point
• The one dimensional Kondo lattice model at partial band filling
• Thermodynamic quantum critical behavior of the Kondo necklace model
• Zooming in on heavy fermions in Kondo lattice models
• Coherence scale of the two-dimensional Kondo Lattice model
• Finite temperature properties of the two-dimensional SU(2) Kondo-necklace
• Spiral magnetic phases on the Kondo Lattice Model: A Hartree-Fock approach
• Single-hole dynamics in the half-filled two-dimensional Kondo-Hubbard model
• Photoinduced $\eta$ pairing in the Kondo lattice model
• From an insulating to a superfluid pair-bond liquid
• Quasiparticle Dynamics in the Kondo Lattice Model at Half Filling
• Zero Temperature Series Expansions for the Kondo Lattice Model
• Antiferromagnetic phase of the Kondo-insulator
• Thermodynamic quantum crtical behavior in the anisotropic Kondo necklace model
• Kondo lattice model with a direct exchange interaction between localized moments
• Antiferromagnetic Phases of the Kondo Lattice
• Breakdown of heavy quasiparticles in a honeycomb Kondo lattice: A quantum Monte Carlo study
• Moment screening in the correlated Kondo lattice model
• Phase diagram of the Hubbard-Kondo lattice model from variational cluster approximation
• Altermagnetism in Heavy Fermion Systems: Mean-Field study on Kondo Lattice
• Quasiparticle Band Structure and Spin Excitation Spectrum of the Kondo Lattice
• Hole-Doping Effects on a Two-dimensional Kondo Insulator
• Thermodynamics of the half-filled Kondo lattice model around the atomic limit
• Low-temperature theory of inversion and quantum oscillations in Kondo insulators
• The Kondo lattice model from strong-coupling viewpoint
• Spiral magnetism and chiral superconductivity in Kondo-Hubbard triangular lattice model
• Interacting heavy fermions in a disordered optical lattice