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

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

2001-03-24

arxiv.org/abs/cond-mat/0103511v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.64.092406

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.

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