Abstract
The itinerant-localized (i-d) exchange interaction is compared with the localized-localized (d-d) exchange interaction in the spin-1/2 ferromagnet for a simplified but computable model, the equally coupled infinite-range Ising-like Hamiltonian including thei-d interaction. The two-time Green's function equation of motion technique is used with anticommutator Green's function and Tyablikov decoupling. The ratio of thei-d exchange energy tod-d exchange energy was found to be about 100 indicating the dominant nature of thei-d interaction in explaining ferromagnetism of the transition metals. Our theory also indicates that the Fermi energy of itinerant electrons is temperature dependent. This model yields agreement with nickel data over the entire temperature range.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
