Itinerant Ferromagnetism in the Periodic Anderson Model

Abstract

We introduce a novel mechanism for itinerant ferromagnetism, based on a simple two-band model. The model includes an uncorrelated and dispersive band hybridized with a second band which is narrow and correlated. The simplest Hamiltonian containing these ingredients is the Periodic Anderson Model (PAM). Using quantum Monte Carlo and analytical methods, we show that the PAM and an extension of it contain the new mechanism and exhibit a non-saturated ferromagnetic ground state in the intermediate valence regime. We propose that the mechanism, which does not assume an intra atomic Hund's coupling, is present in both the iron group and in some f electron compounds like Ce(Rh_{1-x} Ru_x)_3 B_2, La_x Ce_{1-x} Rh_3 B_2 and the uranium monochalcogenides US, USe, and UTe.

References in corpus (4)

• Nagaoka ferromagnetism in the two-dimensional infinite-U Hubbard model
• Segmented Band Mechanism for Itinerant Ferromagnetism
• Stabilization of d-Band Ferromagnetism by Hybridization with Uncorrelated Bands
• Ferromagnetism in the Strong Hybridization Regime of the Periodic Anderson Model

Cited by in corpus (12)

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• Metallic Ferromagnetism in the Kondo Lattice
• Mechanism for transitions between ferromagnetic and antiferromagnetic orders in $d$-electron metallic magnets
• Evolution of ferromagnetic and non-Fermi liquid state with doping:the case of Ru doped UCoGe
• Exact ground states of correlated electrons on pentagon chains
• Ferromagnetism and Kondo Insulator Behavior in the Disordered Periodic Anderson Model
• Microscopic mechanism for the unusual antiferromagnetic order and the pressure-induced transition to ferromagnetism in USb${}_2$
• Electronic correlations, spectral and magnetic properties of ZrZn${}_2$
• Determinant Quantum Monte Carlo Study of Exhaustion in the Periodic Anderson Model
• Spin-density functional study of the organic polymer dimethylaminopyrrole: A realization of the organic periodic Anderson model
• Ferromagnetism without flat bands in thin armchair nanoribbons
• Doping control of realization of an extended Nagaoka ferromagnetic state from the Mott state