Title
Intrasite 4f-5d electronic correlations in the quadrupolar model of the gamma-alpha phase transition in Ce Intrasite 4f-5d electronic correlations in the quadrupolar model of the gamma-alpha phase transition in Ce
Author
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Volume/pages
66(2002) :5 , 12 p.
ISSN
1098-0121
1550-235X
1098-0121
Article Reference
054103
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Abstract
As a possible mechanism of the gamma-alpha phase transition in pristine cerium a change of the electronic density from a disordered state with symmetry Fm (3) over barm to an ordered state Pa (3) over bar has been proposed. Here we include on-site and intersite electron correlations involving one localized 4f electron and one conduction 5d electron per atom. The model is used to calculate the crystal field of gamma-Ce and the temperature evolution of the mean field of alpha-Ce. The formalism can be applied to crystals where quadrupolar ordering involves several electrons on the same site.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/35caf0/7823.pdf
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