Properties of a diagonal 2-orbital ladder model of the Fe-pnictide superconductors

Details Properties of a diagonal 2-orbital ladder model of the Fe-pnictide superconductors Properties of a diagonal 2-orbital ladder model of the Fe-pnictide superconductors

2009-12-01

arxiv.org/abs/0912.0277v2

Phys. Rev. B 81, 172504 (2010)

Physics

Condensed Matter

Superconductivity

4 pages, 5 figures; Published version

Scientific paper

10.1103/PhysRevB.81.172504

We study a diagonal 2-orbital ladder model of the Fe based superconductors using the density matrix renormalization group method. At half filling, we find a close competition between a "spin-striped" state and a non-collinear "spin-checkerboard" state, as well as significant nematic correlations. Upon finite hole or electron doping, the dominant pairing correlations are found to have A$_{1,g}$ ($S-$wave) symmetry.

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