Multiorbital Effects on Antiferromagnetism in Fe Pnictides

Details Multiorbital Effects on Antiferromagnetism in Fe Pnictides Multiorbital Effects on Antiferromagnetism in Fe Pnictides

2009-03-24

arxiv.org/abs/0903.4064v2

J. Phys. Soc. Jpn. 78, 083704 (2009)

Physics

Condensed Matter

Superconductivity

5 pages, 4 figures

Scientific paper

10.1143/JPSJ.78.083704

We apply a Hartree-Fock approximation to a two-orbital model proposed for Fe pnictide superconductors. It is found that the antiferromagnetic (AFM) order with the ordering vector Q=(pi,0) is realized. The AFM order appears simultaneously with ferro-orbital order, the latter leads to a secondary lattice distortion. We also investigate the influence of doping on the AFM order. The size of the AFM moment changes continuously for lightly doped cases, but when the amount of doped carriers exceeds a certain value the AFM state is suddenly destroyed. We also show that Fermi surfaces remain and change significantly on doping even in the AFM state. This behaviour is explained by considering the nesting due to the multi-sheet Fermi-surface structure and multiorbital nature of the electronic bands characteristic to Fe pnictides.

Affiliated with

Also associated with

No associations

Rating

Multiorbital Effects on Antiferromagnetism in Fe Pnictides 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 Multiorbital Effects on Antiferromagnetism in Fe Pnictides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiorbital Effects on Antiferromagnetism in Fe Pnictides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-347794