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Topological phase transitions in strongly correlated systems: application to CoSnS
V. Yu. Irkhin, Yu. N. Skryabin
The topological transition in the strongly correlated half-metallic ferromagnetic compound CoSnS from Weyl semimetal (including chiral massless fermions) to a non-magne…
Electronic States and Anomalous Hall Effect in Strongly Correlated Topological Systems
V. Yu. Irkhin, Yu. N. Skryabin
We treat elementary excitations, the spin-liquid state, and the anomalous Hall effect (including the quantum one in purely 2D situation) in layered highly correlated systems. The m…
Incommensurate magnetic order in rare earth and transition metal compounds with local moments
A. K. Pankratova, P. A. Igoshev, V. Yu. Irkhin
Within the framework of the - exchange model in the mean-field approximation for square, simple cubic, body-centered and face-centered cubic lattices, the formation of a f…
Metal-insulator transition and antiferromagnetism in the generalized Hubbard model: Treatment of correlation effects
P. A. Igoshev, V. Yu. Irkhin
The ground state for the half-filled Hubbard model is treated within the Hartree-Fock approximation and the slave boson approach including correlations. The criterium for th…
Locallized Magnetism in Low-Dimensional Systems
A. A. Katanin, V. Yu. Irkhin
The current theoretical and experimental situation is reviewed for low-dimensional (layered and chain-like) insulating systems. Such systems possess a low magnetic transition tempe…