2 papers
cond-mat.str-el2024
Kondo-Heisenberg toy models: Comparison of exact results and spin wave expansion
M. Frakulla, J. Strockoz, D. S. Antonenko +1
In this paper we study a class of exactly solvable Kondo-Heisenberg toy models in one dimension, with the goal of comparing the exact low-energy excitations of the ferromagnetic gr…
cond-mat.str-el2024
Canonical strong coupling spin wave expansion of Kondo lattice magnets. I. Effective Hamiltonian via canonical transformation
J. Strockoz, M. Frakulla, D. Antonenko +1
This paper develops a systematic strong coupling spin wave expansion of itinerant Kondo lattice magnets, magnets in which local moment spins are Kondo coupled to itinerant charge d…