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

doi:10.1103/PhysRevB.75.220401

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

Strongly Correlated Electrons 2009-11-13 v1

Authors: 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.

Keywords

indirect magnetic interaction spin dimer Cu$_2$Fe$_2$Ge$_4$O$_{13}$ neutron scattering superexchange

Cite

@article{arxiv.0705.2052,
  title  = {Indirect magnetic interaction mediated by spin dimer in Cu$_2$Fe$_2$Ge$_4$O$_{13}$},
  author = {T. Masuda and K. Kakurai and M. Matsuda and K. Kaneko and N. Metoki},
  journal= {arXiv preprint arXiv:0705.2052},
  year   = {2009}
}

Comments

to be published in PRB rapid communication

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