Premium
Remarks on the Ferromagnetic Solutions of the Extended Hubbard Model
Author(s) -
ElJaick Léa J.,
Troper A.,
Gomes A. A.
Publication year - 1980
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.2220990143
Subject(s) - hubbard model , ferromagnetism , magnetization , hamiltonian (control theory) , decoupling (probability) , electron , physics , equations of motion , limit (mathematics) , atom (system on chip) , condensed matter physics , statistical physics , magnetic field , quantum mechanics , mathematics , mathematical analysis , superconductivity , computer science , mathematical optimization , control engineering , engineering , embedded system
The extended Hubbard Hamiltonian is studied using the method of the equations of motion. The decoupling approximations, suitable for the strong intra‐atomic repulsion limit are discussed. One of the approximations (mean field approach to deal with next neighbour interactions) is worked out numerically. The magnetization is obtained as a function of the strength of the next neighbour couplings and of the number of electrons per atom.