Bosonization Approach to the One-Dimensional Kondo Lattice Model at Half Filling: Reexamination

Abstract

Low-energy properties of the one-dimensional Kondo lattice model are investigated by using bosonization and renormalization group methods. The formation of the spin and charge excitation gaps at half-filling is discussed in detail both for antiferromagnetic and ferromagnetic Kondo couplings. Also, the effect of the interaction between conduction electrons on the gap formation is studied both for the Kondo insulating phase and for the Haldane gap phase. It is found that while the repulsive interaction changes the dependence of the excitation gap on the Kondo exchange coupling, the attractive interaction can drive the Kondo (or Haldane) insulating phase to a completely different phase of massless metallic states.

JPSJ-style files are included

Cited by in corpus (16)

• The one dimensional Kondo lattice model at partial band filling
• Thermodynamic properties of the one-dimensional Kondo insulators studied by the density matrix renormalization group method
• A Coulomb gas approach to the anisotropic one-dimensional Kondo lattice model at arbitrary filling
• Photoinduced $\eta$ pairing in the Kondo lattice model
• Thermodynamics of doped Kondo insulator in one dimension: Finite Temperature DMRG Study
• Dynamic correlations in doped 1D Kondo insulator: Finite-T DMRG study
• Symmetry-protected topological phase transition in one-dimensional Kondo lattice and its realization with ultracold atoms
• Transport Properties of the One Dimensional Ferromagnetic Kondo Lattice Model : A Qualitative Approach to Oxide Manganites
• Spin and lattice effects in the Kondo lattice model
• Unveiling the Kondo cloud: unitary RG study of the Kondo model
• Critical Ising modes in low-dimensional Kondo insulators
• Lieb-Schultz-Mattis constraints for the insulating phases of the one-dimensional SU($N$) Kondo lattice model
• The effect of Hund's Coupling on one-dimensional Luttinger Liquids
• One-dimensional physics in transition-metal nanowires: Phases and elementary excitations
• Bosonization solution of the Kondo lattice in a Luttinger liquid
• Influence of finite Hund rules and charge transfer on properties of Haldane systems