2000/08/31 by M. O. Dzero, M O Dzero, L. P. Gor'kov +3 · 2 citations
Materials Science · Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quasicrystal Structures and Properties #Rare-earth and actinide compounds #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/12/47/102
published as J. Phys. Condens. Matter 12 (2000) L1-L8 · RevTeX, 5 pages, 2 figures
openalex publication_date 2000/11/06 · arxiv created 2000/12/11 · arxiv updated 2009/11/30 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/30
The puzzling properties of the first-order phase transition in YbInCu 4 and its alloys in the wide range of magnetic fields and temperatures are perfectly described in terms of a simple entropy transition for free Yb ions. In particular, it turns out that the transition line in the ( B , T )-plane is very close to the elliptic shape, as it has been observed experimentally. Similar calculations are done, and the experiments are proposed for the (γ-α) phase transition in Ce in Megagauss fields. We speculate, that in the case of YbInCu 4 the first-order transition is a Mott transition between a higher temperature phase in which localized moments are stabilized by the entropy terms in the free energy, and a band-like non-magnetic ground state of the f-electrons.