Orbital-spin ordering in the striped antiferromagnetic state of iron-based superconductors

Details Orbital-spin ordering in the striped antiferromagnetic state of iron-based superconductors Orbital-spin ordering in the striped antiferromagnetic state of iron-based superconductors

2011-05-26

arxiv.org/abs/1105.5412v1

Physics

Condensed Matter

Superconductivity

6 pages, 5 figures

Scientific paper

The magnetic properties of iron-arsenides are investigated using the LSDA+U approach. In addition to one high moment state, we find that a positive U also produces two low moment states with m~0.4 $\mu_{B}$ and m~1.0 $\mu_{B}$. The electronic structures indicate that the low moment states originate in the strong orbital hybridization between antiferromagnetic Fe neighbors. Therefore, the geometry of the FeAs4 tetrahedron is crucial to the low moment states, which is the key to understand the negative pressure coefficient of Tc in LiFeAs. Finally, our theory suggests that the superconducting phase is an orbital-spin ordered state, where the orbital spin-moments cancel each other.

Affiliated with

Also associated with

No associations

Rating

Orbital-spin ordering in the striped antiferromagnetic state of iron-based superconductors 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 Orbital-spin ordering in the striped antiferromagnetic state of iron-based superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orbital-spin ordering in the striped antiferromagnetic state of iron-based superconductors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-663900