2015/07/11 by Marcin Abram, Marcin M. Wysokiński, J. Spałek +1 · 13 citations
Materials Science · Mathematics · Physics and Astronomy · #Condensed matter physics #Critical point (mathematics) #Electron #Geometry #Iron-based superconductors research #Lattice (music) #Mathematics #Phase (matter) #Phase diagram #Phase transition #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Statistical physics #Tricritical point #cond-mat.str-el
paper · pdf · doi:10.1016/j.jmmm.2015.07.017
published in Journal of Magnetism and Magnetic Materials 400, 27-30 (Elsevier BV) · 4 pages, 4 figures, printed in Journal of Magnetism and Magnetic Materials, Available online 11 July 2015
openalex publication_date 2015/07/11 · arxiv created 2015/09/22 · arxiv updated 2015/09/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In the present work we analyze the second order transition line that connect the tricritical point and the quantum critical ending point on the temperature--magnetic-field plane in UGe2. For the microscopic modeling we employ the Anderson lattice model recently shown to provide a fairly complete description of the full magnetic phase diagram of UGe2 including all the criticalities. The shape of the so-called tricritical wings, i.e. surfaces of the first-order transitions, previously reported by us to quantitatively agree with the experimental data, is investigated here with respect to the change of the total filling and the Landé factor for f electrons which can differ from the free electron value. The analysis of the total filling dependence demonstrates sensitivity of our prediction when the respective positions of the critical ending point at the metamagnetic transition and tricritical point are mismatched as compared to the experiment.