BaCo$_2$(AsO$_4$)$_2$: Strong Kitaev, After All

The inelastic neutron scattering results and their analysis unequivocally point to a dominant Kitaev interaction in the honeycomb-lattice cobaltate BaCo $_{2}$ (AsO $_{4}$ ) $_{2}$ . Our anisotropic-exchange model closely describes $a l l$ available neutron scattering data in the material’s field-polarized phase. The density-matrix renormalization group results for our model are in close accord with the unusual double-zigzag magnetic order and the low in-plane saturation field of BaCo $_{2}$ (AsO $_{4}$ ) $_{2}$ .

BaCo $_{2}$ (AsO $_{4}$ ) $_{2}$ : Strong Kitaev, After All

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BaCo $_{2}$ (AsO $_{4}$ ) $_{2}$ : Strong Kitaev, After All

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BaCo22​(AsO44​)22​: Strong Kitaev, After All

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BaCo22​(AsO44​)22​: Strong Kitaev, After All

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BaCo $_{2}$ (AsO $_{4}$ ) $_{2}$ : Strong Kitaev, After All

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BaCo $_{2}$ (AsO $_{4}$ ) $_{2}$ : Strong Kitaev, After All

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