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arXiv · 0705.2052

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

T. Masuda·K. Kakurai·M. Matsuda·K. Kaneko·N. Metoki
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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.

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T. Masuda, K. Kakurai, M. Matsuda, K. Kaneko, N. Metoki. 2007-05-14. Indirect magnetic interaction mediated by spin dimer in Cu$_2$Fe$_2$Ge$_4$O$_{13}$. https://doi.org/10.1103/physrevb.75.220401

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