| תקציר: | In this talk, I describe the application of DFT+DMFT framework to
explore both local and non-local magnetic properties of strongly
correlated materials in the paramagnetic phase. In particular, I
discuss the formation of local magnetic moments, the interplay between
their magnetic exchange interactions and chemical bonding, and the
splitting of electronic spectra caused by magnetic fluctuations. These
phenomena will be illustrated through examples ranging from itinerant
magnets such as α-iron and nickel to the half-metallic compound CrO₂,
and further to two-dimensional systems including itinerant magnets
(Fe₂C, CrTe₂) and semiconductors (CrCl₃, CrSBr). For semiconductors,
parallels between magnetic and optical properties are also discussed.
Despite belonging to different material classes, the considering
systems exhibit strikingly similar features of magnetic behavior,
which will be analyzed and compared throughout the talk. |