Hybridization functions of intermetallic Ce compounds with group VI elements

Details Hybridization functions of intermetallic Ce compounds with group VI elements Hybridization functions of intermetallic Ce compounds with group VI elements

2006-10-30

arxiv.org/abs/cond-mat/0610807v1

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 2 figures

Scientific paper

Among the Cerium compounds, the heavier monochalcogenides CeY (Y=S,Se,Te) of cerium provide a class of compounds which together with the heavier monopnictides CeX (X=N,P,As,Sb,Bi) exhibit extremely interesting physical properties. The hybridization of the partially delocalized f-electrons seems to be responsible for the unusual properties, in particular the magnetic ones which show great chemical sensitivity. As compared to the monopnictides, the monochalcogenides have an additional anion p-electron which shifts the Fermi energy into the p-region of the Cerium 5d-derived density of states, and which should affect the hybridization function of the electrons in the conduction band. In this contribution we analyze the 4f-hybridization function and the crystal-field splittings of the compounds under study. KEY WORDS: Highly correlated systems, crystal fields, p-electron.

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