Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8153288 | Journal of Magnetism and Magnetic Materials | 2018 | 9 Pages |
Abstract
Ground state magnetic phase diagrams of the square and simple cubic lattices are investigated for the narrow band Hubbard model within the slave-boson approach by Kotliar and Ruckenstein. The transitions between saturated (half-metallic) and non-saturated ferromagnetic phases as well as similar transition in antiferromagnetic (AFM) state are considered in the three-dimensional case. Two types of saturated antiferromagnetic state with different concentration dependences of sublattice magnetization are found in the two-dimensional case in the vicinity of half-filling: the state with a gap between AFM subbands and AFM state with large electron mass. The latter state is hidden by the phase separation in the finite-U case.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
P.A. Igoshev, M.A. Timirgazin, A.K. Arzhnikov, V.Yu. Irkhin,