Magnetic states of iron-based two-leg ladder tellurides

17 Oct 2019 Zhang Yang Lin Ling-Fang Moreo Adriana Dong Shuai Dagotto Elbio

The recent discovery of superconductivity at high pressure in the two-leg ladder compounds BaFe$_2X_3$ ($X$=S, Se) started the novel field of quasi-one-dimensional iron-based superconductors. In this publication, we use Density Functional Theory (DFT) to predict that the previously barely explored ladder compound RbFe$_2$Te$_3$ should be magnetic with a CX-type arrangement involving ferromagnetic rungs and antiferromagnetic legs, at the realistic density of $n=5.5$ electrons per iron... (read more)

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