Publication

Spin-Nematic Interaction in the Multiferroic Compound Ba2CoGe2O7

Martin Mansson
2014
Journal Articles

Abstract

We demonstrate the existence of the spin-nematic interactions in an easy-plane type antiferromagnet Ba2CoGe2O7 by exploring the magnetic anisotropy and spin dynamics. The combination of neutron scattering and magnetic susceptibility measurements reveals that the origin of the in-plane anisotropy is an antiferro-type interaction of the spin-nematic operator. The relation between the nematic operator and the electric polarization in the ligand symmetry of this compound is presented. The introduction of the spin-nematic interaction is useful to understand the physics of spin and electric dipole in multiferroic compounds.

Official source

https://infoscience.epfl.ch/entities/publication/0795ab7c-9abb-4c99-bf88-dc34a4f0a7b5

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Spin-Nematic Interaction in the Multiferroic Compound Ba2CoGe2O7

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