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arXiv · 0912.0277

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

E. Berg·S. A. Kivelson·D. J. Scalapino
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Abstract

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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E. Berg, S. A. Kivelson, D. J. Scalapino. 2010-06-07. Properties of a diagonal 2-orbital ladder model of the Fe-pnictide superconductors. https://doi.org/10.1103/physrevb.81.172504

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