FINITE-TEMPERATURE VALENCE TRANSITION IN MIXED-VALENCE SYSTEMS

Authors
GHOSH NK SARKAR RL
Citation
Nk. Ghosh et Rl. Sarkar, FINITE-TEMPERATURE VALENCE TRANSITION IN MIXED-VALENCE SYSTEMS, Physica status solidi. b, Basic research, 176(2), 1993, pp. 395-400
Citations number
27
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica status solidi. b, Basic research → ACNP
ISSN journal
03701972
Volume
176
Issue
2
Year of publication
1993
Pages
395 - 400
Database
ISI
SICI code
0370-1972(1993)176:2<395:FVTIMS>2.0.ZU;2-5
Abstract
The valence transition at finite temperature in mixed valence (MV) sys tems is investigated using the extended Falicov-Kimball (F-K) model wi th 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 experim ental findings.