3 papers
cond-mat.other2026
Unusual half-metallic state in unconventional magnets
Yuri B. Kudasov
Half-metallic ferromagnets exhibit a gap in the density of states for one spin projection while remaining gapless for the opposite spin. We show that in helimagnets an unusual half…
cond-mat.other2025
Topological bands in metals
Yu. B. Kudasov
In crystalline systems with a superstructure, the electron dispersion can form a nontrivial covering of the Brillouin zone. It is proved that the number of sheets in this covering…
cond-mat.other2024
Topological metal state in helimagnets
Yu. B. Kudasov
A theory for nontrivial topology of band structure in metallic helimagnets is developed. Two theorems on electron dispersion in helimagnets are proved. They reveal a Kramers-like d…