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

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...

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Bibliographic Details
Published in:arXiv.org 2007-05
Main Authors: Masuda, T, Kakurai, K, Matsuda, M, Kaneko, K, Metoki, N
Format: Article
Language:English
Subjects:
Copper
Dimers
Energy resolution
Inelastic scattering
Neutron scattering
Neutrons
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.0705.2052