Abstract
The normal-state spin dynamics of the recently discovered iron-pnictide superconductors is discussed by calculating the spin structure factor S ( q ,ω) in an itinerant five-band model within random phase approximation (RPA). Owing to the characteristic Fermi surface structure of iron pnictide, a column-like response is found at (π,0) in extended Brillouin zone in the undoped case, which is consistent with the recent neutron scattering experiment. This indicates that the localized spin model is not necessary to explain the spin dynamics of this system. We also study NMR 1/ T 1 T in the same footing calculation and show that the itinerant model can capture the magnetic property of iron-pnictide superconductors.
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.
