Low Energy, Coherent, Stoner-like Excitations in CaFe$_{2}$As$_{2}$

Details Low Energy, Coherent, Stoner-like Excitations in CaFe$_{2}$As$_{2}$ Low Energy, Coherent, Stoner-like Excitations in CaFe$_{2}$As$_{2}$

2010-04-17

arxiv.org/abs/1004.2934v2

Physics

Condensed Matter

Materials Science

Scientific paper

10.1103/PhysRevB.83.060404

Using linear-response density-functional theory, magnetic excitations in the striped phase of CaFe$_{2}$As$_{2}$ are studied as a function of local moment amplitude. We find a new kind of excitation: sharp resonances of Stoner-like (itinerant) excitations at energies comparable to the N{\'{e}}el temperature, originating largely from a narrow band of Fe $d$ states near the Fermi level, and coexist with more conventional (localized) spin waves. Both kinds of excitations can show multiple branches, highlighting the inadequacy of a description based on a localized spin model.

Affiliated with

Also associated with

No associations

Rating

Low Energy, Coherent, Stoner-like Excitations in CaFe$_{2}$As$_{2}$ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Low Energy, Coherent, Stoner-like Excitations in CaFe$_{2}$As$_{2}$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low Energy, Coherent, Stoner-like Excitations in CaFe$_{2}$As$_{2}$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-69493