Evidence of local magnetic order in hcp iron from Raman mode splitting

Details Evidence of local magnetic order in hcp iron from Raman mode splitting Evidence of local magnetic order in hcp iron from Raman mode splitting

2001-11-26

arxiv.org/abs/cond-mat/0111487v1

Physics

Condensed Matter

Materials Science

4 pages (revtex4), 3 eps figures submitted to PRL

Scientific paper

Experimental measurements of Raman spectra for hcp iron at high pressure show two modes over a considerable pressure range in contrast to the prediction of one doubly degenerate mode for the hcp lattice. We use density functional theory to investigate the influence of magnetic order on the Raman active modes of hcp iron. We find an antiferromagnetic state that lifts the degeneracy of the transverse optical mode, and yields stable antiferromagnetic moments up to approximately 60 GPa (55 Bohr$^3$). The resulting frequencies of the two transverse optical modes are in good agreement with the experimental Raman shifts, lending support to the existence of local antiferromagnetic order in hcp iron.

Affiliated with

Also associated with

No associations

Rating

Evidence of local magnetic order in hcp iron from Raman mode splitting 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 Evidence of local magnetic order in hcp iron from Raman mode splitting, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence of local magnetic order in hcp iron from Raman mode splitting will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-220600