Properties of a diagonal 2-orbital ladder model of the Fe-pnictide superconductors
classification
❄️ cond-mat.supr-con
cond-mat.str-el
keywords
correlationsdiagonalladdermodelorbitalstatesuperconductorsclose
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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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