Indirect magnetic interaction mediated by spin dimer in Cu${}_2$Fe${}_2$Ge${}_4$O${}_{13}$

Abstract

Cu${}_2$Fe${}_2$Ge${}_4$O${}_{13}$ is a bicomponent compound that consists of Cu dimers and Fe chains with separate energy scale. By inelastic neutron scattering technique with high-energy resolution we observed the indirect Fe - Fe exchange coupling by way of the Cu dimers. The obtained parameters of the effective indirect interaction and related superexchange interactions are consistent with those estimated semi-statically. The consistency reveals that the Cu dimers play the role of nonmagnetic media in the indirect magnetic interaction.

to be published in PRB rapid communication

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• An experimental measurement of the staggered magnetization curve for a Haldane spin chain
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Cited by in corpus (6)

• Magnetism of the antiferromagnetic spin-$\frac{1}{2}$ tetramer compound CuInVO${}_5$
• Magnetic excitations of the spin-1/2 tetramer substance Cu${}_2$${}^{114}$Cd${}^{11}$B${}_2$O${}_6$ obtained by inelastic neutron scattering experiments
• Negative magnetization of Li2Ni2Mo3O12 having a spin system composed of distorted honeycomb lattices and linear chains
• Frustrated antiferromagnetic spin chains of edge-sharing tetrahedra in volcanic minerals K3Cu3(Fe0.82Al0.18)O2(SO4)4 and K4Cu4O2(SO4)4MeCl
• 63,65Cu Nuclear Resonance Study of the Coupled Spin Dimers and Chains Compound Cu2Fe2Ge4O13
• Cooperative order and excitation spectra in the bicomponent spin networks