The S=1 underscreened anderson lattice model for uranium compounds
Fecha
2011Autor
Materia
Abstract
Magnetic properties of uranium and neptunium compounds showing coexistence of the Kondo e®ect and ferromagnetic order are investigated within the degenerate Anderson Lattice Hamiltonian, describing a 5f2 electronic configuration with S = 1 spins. Through the Schrie®er-Wol® transformation, both an exchange Kondo interaction for the S = 1 f-spins and an e®ective f-band term are obtained, allowing to describe the coexistence of Kondo e®ect and ferromagnetic ordering and a weak delocalization of th ...
Magnetic properties of uranium and neptunium compounds showing coexistence of the Kondo e®ect and ferromagnetic order are investigated within the degenerate Anderson Lattice Hamiltonian, describing a 5f2 electronic configuration with S = 1 spins. Through the Schrie®er-Wol® transformation, both an exchange Kondo interaction for the S = 1 f-spins and an e®ective f-band term are obtained, allowing to describe the coexistence of Kondo e®ect and ferromagnetic ordering and a weak delocalization of the 5f-electrons. We calculate the Kondo and Curie temperatures and we can account for the pressure dependence of the Curie temperature of UTe. ...
En
Journal of physics : conference series. Bristol. Vol. 273 (2011), 012028, 5 p.
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