Three Localized f Electrons in UPd₂Al₃ and in UGe₂ Intermetallics

• Authors: R. Radwanski , D. Nalecz , Z. Ropka
• Languages of publication: EN

Abstracts

EN

We have calculated the strength of the excitations between the crystal-field states which are in agreement with inelastic-neutron-scattering results. This agreement confirms the existence in the heavy-fermion superconductor UPd₂Al₃ the crystal-field electronic structure being the finger-print of the U^{3+} ions with three localized f electrons forming strongly-correlated atomic-like quantum system 5f³. The ionic integrity and the low-energy crystal-field electronic structure is preserved in this metallic system in the meV scale as has been postulated in the Quantum Atomistic Solid State theory (QUASST). We provide preliminary results with the U^{3+} ion in UGe₂ showing the ground-state eigenfunction which reproduces the ordered magnetic-moment value of 1.48 μ_{B}. This moment is composed from the dominant orbital contribution (2.6 μ_{B}) and the opposite spin moment (1.12 μ_{B}).

Keywords

EN

71.70.Ej; 75.10.Dg; 75.30.Gw

Discipline

• 75.30.Gw: Magnetic anisotropy
• 75.10.Dg: Crystal-field theory and spin Hamiltonians(see also 71.70.Ch Crystal and ligand fields)
• 71.70.Ej: Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2016
• Volume: 130
• Issue: 2
• Pages: 545-550

Dates

published

2016-08

Contributors

author

R. Radwanski

• Center of Solid State Physics, św. Filip 5, 31-150 Kraków, Poland
• Institute of Physics, Pedagogical University, 30-084 Kraków, Poland

author

D. Nalecz

• Center of Solid State Physics, św. Filip 5, 31-150 Kraków, Poland
• Institute of Physics, Pedagogical University, 30-084 Kraków, Poland

author

Z. Ropka

• Center of Solid State Physics, św. Filip 5, 31-150 Kraków, Poland

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Identifiers

DOI

10.12693/APhysPolA.130.545