Premium
Magnetic Excitation in Peierls‐Hubbard Model
Author(s) -
Chen Bin,
Yu Chaofan,
Fang Hui,
Jiao Zhengkuan,
Zhang Qirui
Publication year - 1995
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.2221920117
Subject(s) - excitation , condensed matter physics , hubbard model , hamiltonian (control theory) , excited state , phonon , physics , electron , band gap , spin (aerodynamics) , atomic physics , quantum mechanics , superconductivity , mathematical optimization , mathematics , thermodynamics
Based on the Peierls‐Hubbard Hamiltonian, the influence of electron‐phonon interaction on the spin excitation of itinerant systems has been analyzed. It is shown that the interaction not only changes the dynamic response properties, but also decreases the gap between two spin subbands, which makes the electron‐hole pairs easy to be excited singly. It should be emphasized that the spin excitation spectrum has an energy gap due to the presence of the electron‐phonon interaction mentioned above.