Electron correlation and spin density wave order in iron pnictides

Details Electron correlation and spin density wave order in iron pnictides Electron correlation and spin density wave order in iron pnictides

2009-10-14

arxiv.org/abs/0910.2707v2

Phys. Rev. Lett. 105, 096401 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures, revtex4 file, ersion to be published in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.105.096401

We study the correlation effects on the electronic structure and spin density wave order in Fe-pnictides. Using the multiorbital Hubbard model and Gutzwiller projection, we show that nonperturbative correlation effects are essential to stabilize the metallic spin density wave phase for the intermediate correlation strengths appropriate for pnictides. We find that the ordered moments depend sensitively on the Hund's rule coupling $J$ but weakly on the intraorbital Coulomb repulsion $U$, varying from $0.3\mu_B$ to $1.5\mu_B$ in the range $J=0.3\sim0.8$ eV for $U=3\sim4$ eV. We obtain the phase diagram and discuss the effects of orbital order and electron doping, the evolution of the Fermi surface topology with the ordered moment, and compare to recent experiments.

Affiliated with

Also associated with

No associations

Rating

Electron correlation and spin density wave order in iron 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 Electron correlation and spin density wave order in iron pnictides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron correlation and spin density wave order in iron pnictides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-617188