Pseudofermion ferromagnetism in the Kondo lattices: a mean-field approach

Abstract

Ground state ferromagnetism of the Kondo lattices is investigated within slave fermion approach by Coleman and Andrei within a mean-field approximation in the effective hybridization model. Conditions for formation of both saturated (half-metallic) and non-saturated magnetic state are obtained for various lattices. A description in terms of universal functions which depend only on bare electron density of states (DOS) is presented. A crucial role of the energy dependence of the bare DOS (especially, of DOS peaks) for the small-moment ferromagnetism formation is demonstrated.

Final version, Eur. Phys. J. B, accepted

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Cited by in corpus (4)

• Unconventional magnetism of the Kondo lattice
• Spiral magnetic order, non-uniform states and electron correlations in the conducting transition metal systems
• The quantum ferromagnetic transition in a clean Kondo lattice is discontinuous
• Magnetism, non-Fermi-liquid behavior and deconfinement in Kondo lattices