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Topological states in strongly correlated systems
V. Yu. Irkhin, Yu. N. Skryabin
Topological order in strongly correlated systems, including quantum spin liquids, quantum Hall states in lattices and topological superconductivity is treated. Various metallic non…
S. Vonsovsky and the dawn of the theory of strongly correlated systems
V. Yu. Irkhin, S. V. Streltsov
A survey of scientific and social activity of S. V. Vonsovsky is presented. His fundamental works on the theory of electronic properties and magnetism of transition and rare-earth…
Unusual kinetic properties of usual Heusler alloys
V. V. Marchenkov, V. Yu. Irkhin, A. A. Semiannikova
The review considers various groups of Heusler compounds, which can have the properties of a semiconductor, a half-metallic ferromagnet, a spin gapless semiconductor, a topological…
Relations between and : Nilakantha's series and Stirling's formula
V. Yu. Irkhin
Approximate relations between and are reviewed, some new connections being established. Nilakantha's series expansion for is transformed to accelerate its convergence.…
Giant density-of-states van Hove singularities in the face-centered cubic lattice
P. A. Igoshev, V. Yu. Irkhin
All van Hove singularities in the density of states (DOS) of face-centered cubic lattice in the nearest and next-nearest neighbour approximation, focusing on higher-order ones, are…
Two-band model and RVB-type states: application to Kondo lattices, pyrochlores and Mn-based systems
V. Yu. Irkhin, Yu. N. Skryabin
An exotic fractionalized Fermi-liquid FL theory of metallic systems, which combines resonant-valence-bond (RVB) state and the band of current carriers, is treated. An applicati…