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Finite Temperature Valence Transition in Mixed Valence Systems
Author(s) -
Ghosh N. K.,
Sarkar R. L.
Publication year - 1993
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.2221760213
Subject(s) - valence (chemistry) , condensed matter physics , coulomb , chemistry , physics , materials science , electron , quantum mechanics
The valence transition at finite temperature in mixed valence (MV) systems is investigated using the extended Falicov‐Kimball (F‐K) model with Coulomb f – f and the electron‐phonon (EP) interactions. The role of different interactions and the influence of temperature on the valence transition are studied. It is found that the lowering of temperature favours the transition. The results are compared with existing experimental findings.