paper

Magnetic Toroidal Moment under Partial Magnetic Order in Hexagonal Zigzag-Chain Compound CeTiBi

arXiv:2208.01754 · doi:10.7566/JPSJ.91.123701

Abstract

We theoretically investigate an antiferromagnetic structure in a hexagonal zigzag-chain compound CeTiBi, which shows a linear magnetoelectric effect in metals and an unfamiliar temperature dependence of magnetic susceptibility. We find a partial magnetic order as a coexistence of a nonmagnetic zigzag chain and staggered antiferromagnetic zigzag chains. The latter accompany in-plane magnetic toroidal dipole moments which are responsible for the observed behaviors. We show that magnetic frustration arising from competing exchange interactions plays an important role to realize such a partial magnetic order. Furthermore, we present the important spin-orbit coupling parameters to induce the physical phenomena driven by the magnetic toroidal dipole moment, such as the linear magnetoelectric effect and nonlinear transport.

6 pages, 4 figures, 1 table

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