Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
The effect of electron-phonon interaction (EPI) has been investigated using extended Falicov-Kimball model in an exact method. Phonon-induced hybridization term is considered in terms of electron operators. Average occupation number off-electrons, entropy, specific heat, and spin susceptibility are calculated. First-order valence transition occurs at an increased value of EPI. Double-peak structure is observed in specific heat curves. The specific heat coefficient g rises sharply at low temperatures. EPI increases the rate of growth of antiferromagnetic correlations.
oai:arar.sci.am:23290
ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան
Dec 13, 2023
Feb 27, 2020
19
https://arar.sci.am/publication/26011
Edition name | Date |
---|---|
FALICOV-KIMBALL MODEL EXTENDED BY ELECTRON-PHONON INTERACTION (EPI) | Dec 13, 2023 |
Piuli Mukherjee S. K. Bhowmick N. K. Ghosh
Ter-Kazarian, G.
Mkrtchyan, A. R. Parazian, V. V. Saharian, A. A.
A. Kh. Grigoryan
H. H. Matevosyan K. A. Sargsyan H. F. Haroyan
M. Alexanian
S. R. Kamsarakan-Shahazizian M. M. Muradyan