Choosing the correct strong correlation correction for U3Si2: influence of magnetism

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

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Physical properties of U3Si2 with non-magnetic, ferromagnetic, and antiferromagnetic structures are predicted using DFT+U with Hubbard-U values from 0 to 4 eV. The stability of U3Si2 is compared with its neighbouring phases, U3Si and USi. The results emphasize the importance of magnetism. For non-magnetic U3Si2 a very large Hubbard-U value is required to accurately reproduce the physical constants. However, from the electronic structure of the studied magnetic states with
different Hubbard-U values, it is clear that it is incorrect to use a non-magnetic model for paramagnetic U3Si2 because of the resulting nearly zero occupation of f-electrons.
Iaith wreiddiolSaesneg
Rhif yr erthygl151828
CyfnodolynJournal of Nuclear Materials
Cyfrol527
Dyddiad ar-lein cynnar2 Hyd 2019
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 15 Rhag 2019

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