Incommensurate spin density wave in Co-doped BaFe2As2

Details Incommensurate spin density wave in Co-doped BaFe2As2 Incommensurate spin density wave in Co-doped BaFe2As2

2010-02-04

arxiv.org/abs/1002.0931v2

EPL, 89 (2010) 67008

Physics

Condensed Matter

Superconductivity

7 pages, 8 figures, published in EPL

Scientific paper

10.1209/0295-5075/89/67008

57Fe Mossbauer spectroscopy measurements are presented in the underdoped Ba(Fe{1-x}Cox)2As2 series for x=0.014 (T_c < 1.4K) and x=0.03 and 0.045 (T_c ~ 2 and 12K respectively). The spectral shapes in the so-called spin-density wave (SDW) phase are interpreted in terms of incommensurate modulation of the magnetic structure, and allow the shape of the modulation to be determined. In undoped BaFe2As2, the magnetic structure is commensurate, and we find that incommensurability is present at the lowest doping level (x=0.014). As Co doping increases, the low temperature modulation progressively loses its "squaredness" and tends to a sine-wave. The same trend occurs for a given doping level, as temperature increases. We find that a magnetic hyperfine component persists far above the SDW transition, its intensity being progressively tranferred to a paramagnetic component on heating.

Affiliated with

Also associated with

No associations

Rating

Incommensurate spin density wave in Co-doped BaFe2As2 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 Incommensurate spin density wave in Co-doped BaFe2As2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Incommensurate spin density wave in Co-doped BaFe2As2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-154678