Ising and Spin orders in Iron-based Superconductors

Details Ising and Spin orders in Iron-based Superconductors Ising and Spin orders in Iron-based Superconductors

2008-04-28

arxiv.org/abs/0804.4293v4

Phys. Rev. B 78, 020501(R) (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

4.5 pages, 2 figures

Scientific paper

10.1103/PhysRevB.78.020501

Motivated by recent neutron scattering experiments, we study the ordering of spins in the iron-based superconductors La(O_{1-x}F_x)FeAs, assuming them in proximity to a Mott insulator in the phase diagram. The ground state of the parent system with x = 0 is a spin density wave with ordering wave vector Q = (0, \pi) or (\pi, 0). Upon raising the temperature, we find the system to restore SU(2) symmetry, while an Ising symmetry remains broken, explaining the experimentally observed lattice distortion to a monoclinic crystal structure. Upon further temperature increase, the spins finally disorder at a second transition. The phase transition driven by doping with charge carriers similarly splits into an O(3) transition, and an Ising transition with z = 3 at larger doping.

Affiliated with

Also associated with

No associations

Rating

Ising and Spin orders in 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 Ising and Spin orders in Iron-based Superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ising and Spin orders in Iron-based Superconductors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-690766