A Theory of Magnets with Competing Double Exchange and Superexchange Interactions

Details A Theory of Magnets with Competing Double Exchange and Superexchange Interactions A Theory of Magnets with Competing Double Exchange and Superexchange Interactions

1997-12-08

arxiv.org/abs/cond-mat/9712094v1

Physics

Condensed Matter

4 pages, Latex-Revtex, 3 PostScript figures. Please see report cond-mat/9805238

Scientific paper

10.1063/1.367798

We study the competition between ferromagnetic double exchange (DE) and nearest-neighbour antiferromagnetic exchange in CMR materials. Towards this end, a single site mean field theory is proposed which emphasizes the hopping-mediated nature of the DE contribution. We find that the competition between these two exchange interactions leads to ferro- or antiferromagnetic order with incomplete saturation of the (sub)lattice magnetization. This conclusion is in contrast to previous results in the literature which find a canted spin arrangement under similar circumstances. We attribute this difference to the highly anisotropic exchange interactions used elsewhere. The associated experimental implications are discussed.

Affiliated with

Also associated with

No associations

Rating

A Theory of Magnets with Competing Double Exchange and Superexchange Interactions 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 A Theory of Magnets with Competing Double Exchange and Superexchange Interactions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Theory of Magnets with Competing Double Exchange and Superexchange Interactions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-16086