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- Title
Dual nature of magnetism driven by momentum dependent f-d Kondo hybridization.
- Authors
Kang, Byungkyun; Lee, Yongbin; Ke, Liqin; Kim, Hyunsoo; Kim, Myoung-Hwan; Park, Chul Hong
- Abstract
The intricate nature of magnetism in uranium-based Kondo lattices is a consequence of correlations between U-5f and conduction electrons. Previously, the source of magnetism has been ascribed to either Mott physics or Ruderman-Kittel-Kasuya-Yosida interaction, both of which are not fully applicable to uranium-based Kondo lattices. Using linearized quasiparticle self-consistent GW plus dynamical mean-field theory, we demonstrate a crossover from incoherent to coherent f-d Kondo cloud in the paramagnetic phase of UTe2, USbTe and USbSe. As the transition occurs, we observe an augmented f-d coherence and Pauli-like magnetic susceptibility, with a substantial frozen magnetic moment of U-5f persisting. We show that momentum dependent f-d hybridization is responsible for the magnetic moments arising from the renormalized f electrons' van Hove singularity. Our findings provide a perspective to explain the dual nature of magnetism and the long-range magnetic ordering induced by pressure in UTe2. This work aims at clarifying the puzzling magnetism of several U intermetallics, in particular the pressure-induced magnetism of UTe2. By an ab initio treatment of electronic correlations, the authors show that a momentum dependent f-d hybridization is responsible for the magnetic moments arising from the van Hove singularity of renormalized f electrons.
- Subjects
ORBITAL hybridization; MAGNETISM; CONDUCTION electrons; ELECTRON configuration; MEAN field theory; MAGNETIC moments; MAGNETIC susceptibility
- Publication
Communications Physics, 2024, Vol 7, Issue 1, p1
- ISSN
2399-3650
- Publication type
Article
- DOI
10.1038/s42005-024-01631-8