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Application of the multicomponent Falicov–Kimball model to intermediate‐valence materials: YbInCu 4 and EuNi 2 (Si 1– x Ge x ) 2
Author(s) -
Freericks J. K.,
Zlatić V.
Publication year - 2003
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200301665
Subject(s) - condensed matter physics , formalism (music) , valence (chemistry) , physics , spin–orbit interaction , electron , statistical physics , quantum mechanics , art , musical , visual arts
We develop a formalism to solve the multicomponent Falicov–Kimball model with dynamical mean‐field theory, allowing for all possible crystal‐field couplings (including spin‐orbit coupling). We apply these techniques to solve models of the intermediate‐valence transition [as seen in YbInCu 4 and EuNi 2 (Si 1– x Ge x ) 2 ] in the simple limit of no crystal field or spin‐orbit coupling. We show results for the uniform spin susceptibility, the average localized electron concentration, and transport properties. We also investigate the metamagnetic transition.