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

paper

Indirect magnetic interaction mediated by spin dimer in Cu $_{2}$ Fe $_{2}$ Ge $_{4}$ O $_{13}$

arXiv:0705.2052 · doi:10.1103/PhysRevB.75.220401

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

References in corpus (1)

Magnetic excitation in a new spin gap compound Cu $_{2}$ Sc $_{2}$ Ge $_{4}$ O $_{13}$ : Comparison to Cu $_{2}$ Fe $_{2}$ Ge $_{4}$ O $_{13}$

Indirect magnetic interaction mediated by spin dimer in Cu2​Fe2​Ge4​O13​

Abstract

References in corpus (1)

Indirect magnetic interaction mediated by spin dimer in Cu $_{2}$ Fe $_{2}$ Ge $_{4}$ O $_{13}$