Abstract:
The magnetic properties of strongly correlated Fermi systems are studied within the framework of the fermioncondensation model—phase transition associated with the rearrangement of the Landau quasiparticle distribution, resulting in the appearance of a plateau at T=0 exactly in the Fermi surface of the single-particle excitation spectrum. It is shown that the Curie-Weiss term ∼T−1 appears in the expression for the spin susceptibility χac(T) of the system after the transition point at finite temperatures. The behavior of χac(T, H) as a function of temperature and static magnetic field H in the region where the critical fermion-condensation temperature Tf is close to zero is discussed. The results are compared with the available experimental data.