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arXiv · 0710.5029

Magnetic ground state of coupled edge-sharing CuO_2 spin-chains

U. Schwingenschloegl·C. Schuster
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Abstract

By means of density functional theory, we investigate the magnetic ground state of edge-sharing CuO_2 spin-chains, as found in the (La,Ca,Sr)_14Cu_24O_41system, for instance. Our data rely on spin-polarized electronic structure calculations including onsite interaction (LDA+U) and an effective model for the interchain coupling. Strong doping dependence of the magnetic order is characteristic for edge-sharing CuO_2 spin-chains. We determine the ground state magnetic structure as function of the spin-chain filling and quantify the competing exchange interactions.

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U. Schwingenschloegl, C. Schuster. 2007-10-26. Magnetic ground state of coupled edge-sharing CuO_2 spin-chains. https://doi.org/10.1103/physrevlett.99.237206

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