论文标题
在六角形曲折链中的部分磁性下方的磁环矩Ce $ _3 $ tibi $ _5 $
Magnetic Toroidal Moment under Partial Magnetic Order in Hexagonal Zigzag-Chain Compound Ce$_3$TiBi$_5$
论文作者
论文摘要
从理论上讲，我们研究了六角形曲线磁性结构的抗铁磁结构，$ _3 $ tibi $ _5 $，它显示了金属中的线性磁电效应和磁化敏感性的不熟悉的温度依赖性。我们发现部分磁性秩序是非磁性锯齿形链的共存和交错的反铁磁曲折链。后者伴随着负责观察到的行为的平面内磁环偶极力矩。我们表明，竞争交换相互作用引起的磁性挫败感起着重要的作用，可以实现这种部分磁性。此外，我们提出了重要的自旋轨道耦合参数，以诱导磁环偶极矩驱动的物理现象，例如线性磁电效应和非线性转运。
We theoretically investigate an antiferromagnetic structure in a hexagonal zigzag-chain compound Ce$_3$TiBi$_5$, 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.
