Abstract
A calculation of the reduced spin susceptibility χzz(k, Ω) of the paramagnetic phase of a system of interacting electrons in a narrows band is presented. The treatment is based on a linear response technique for the perturbed system using the Hubbard decoupling scheme within a Greens function method. The result has the property of reducing to a modified random phase result in the weak-interaction limit and is intended to be a valid interpolation formula for all values ofI/Δ. Also presented are conditions for the instability of the paramagnetic phase against the ferromagnetic and the antiferromagnetic state.
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.
