2014/01/17 by Marcin M. Wysokiński, Marcin M. Wysokinski, J. Spałek +1 · 23 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Fermi liquid theory #Fermion #Hubbard model #Lattice (music) #Magnetic field #Magnetization #Mean field theory #Metamagnetism #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Superconductivity #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/26/5/055601
published in Journal of Physics Condensed Matter 26(5), 055601 (IOP Publishing)
openalex publication_date 2014/01/17 · arxiv created 2014/07/25 · arxiv updated 2014/07/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We discuss the Hubbard model in an applied magnetic field and analyze the properties of neutral spin-[Formula: see text] fermions within the so-called statistically consistent Gutzwiller approximation. The magnetization curve reproduces in a semiquantitative manner the experimental data for liquid (3)He in the regime of moderate correlations and in the presence of a small number of vacant cells, modeled by a non-half-filled band situation, when a small number of vacancies (∼5%) is introduced in the virtual fcc lattice. We also present the results for the magnetic susceptibility and the specific heat, in which a metamagnetic-like behavior is also singled out in a non-half-filled band case.