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Electron–Phonon Interaction Induced Hybridisation in Mixed‐Valence Systems
Author(s) -
Ghosh N. K.,
Ghosh S. C.,
Sarkar R. L.
Publication year - 1990
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.2221580121
Subject(s) - electron , condensed matter physics , phonon , valence (chemistry) , physics , electronic correlation , valence electron , quantum mechanics
The two‐site extended spinless Falicov‐Kimball model with electron phonon (EP) interaction is considered. The usual electron‐phonon interaction term is electron operators. Average occupation number of f‐electrons, the correlation function between f and d‐hands, and the correlation between sites are calculated. It is shown that the discontinuous change in f‐electron occupation number depends on EP interaction. Finite temperature specific heat is calculated. A comparison is also made with previously obtained results.