Open AccessINFLUENCE OF INTERACTION BETWEEN ELECTRONS AND PHONONS ON THE MAGNETIC EXCITATION OF ITINERANT ELECTRONS SYSTEM
Author(s) -
C. X. Yu,
Chen Bin,
He Guo-Zhu
Publication year - 1994
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.43.839
Subject(s) - electron , excitation , physics , condensed matter physics , phonon , atomic physics , nuclear physics , quantum mechanics
Based on the Peierls-Hubbard Hamiltonian, the influence of electron-phonon inte-raction on the spin excitation of itinerant electron system has been analysed. It is shown that the interaction not only changes the dynamic property of ωbut also causes the gap between two spin subbands to become narrow, which makes the electron-hole pairs easy to be excited singly. It should be emphasized that the spin excitation spectrum has an energy gap duo to the presence of above-mentioned electron-phonon interaction.