Quasiparticle Band Structure and Spin Excitation Spectrum of the Kondo Lattice

R. Eder

doi:10.1103/physrevb.99.085134

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arXiv · 1902.10442

Quasiparticle Band Structure and Spin Excitation Spectrum of the Kondo Lattice

R. Eder

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Abstract

A formulation of the Kondo lattice Hamiltonian in terms of bond particles is derived and solved in two different approximations. The bond particles correspond to the eigenstates of a single unit cell and are bosons for states with even electron number and fermions for states with an odd electron number. A s a check various physical quantities are calculated for the 1D Kondo insulator a nd good agreement with numerical results is obtained for J/t>1.

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R. Eder. 2019-02-27. Quasiparticle Band Structure and Spin Excitation Spectrum of the Kondo Lattice. https://doi.org/10.1103/physrevb.99.085134

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