Incommensurate spin density modulation in a copper-oxide chain compound with commensurate charge order

Abstract

Neutron diffraction has been used to determine the magnetic structure of Na${}_8$Cu${}_5$O${}_{10}$, a stoichiometric compound containing chains based on edge-sharing CuO${}_4$ plaquettes. The chains are doped with 2/5 hole per Cu site and exhibit long-range commensurate charge order with an onset well above room temperature. Below $T_N=23$ K, the neutron data indicate long-range collinear magnetic order with a spin density modulation whose propagation vector is commensurate along and incommensurate perpendicular to the chains. Competing interchain exchange interactions are discussed as a possible origin of the incommensurate magnetic order.

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Cited by in corpus (6)

• Magnetic structure of the edge-sharing copper oxide chain compound NaCu2O2
• Fluctuation-Driven Selection at Criticality in a Frustrated Magnetic System: the Case of Multiple-k Partial Order on the Pyrochlore Lattice
• Electronic structure, magnetic and dielectric properties of the edge-sharing copper-oxide chain compound NaCu${}_2$O${}_2$
• Spin exchange dominated by charge fluctuations of the Wigner lattice in the newly synthesized chain cuprate Na5Cu3O6
• Magnetism of one-dimensional Wigner lattices and its impact on charge order
• Anisotropic optical response of the mixed-valent Mott-Hubbard insulator NaCu2O2