论文标题
六角形AB堆叠的Kagome晶格结构中的各向异性磁交互：$ \ Mathrm {Mn} _3 \ Mathrm {X} $（$ \ Mathrm {x} $ = $ = $ \ \ \ \ m mathrm {ge}
Anisotropic magnetic interactions in hexagonal AB-stacked kagome lattice structures: Applications to $\mathrm{Mn}_3\mathrm{X}$ ($\mathrm{X}$ = $\mathrm{Ge}$, $\mathrm{Sn}$, $\mathrm{Ga}$) compounds
论文作者
论文摘要
$ \ MATHRM {Mn} _3 \ MATHRM {X} $化合物，其中磁性$ \ Mathrm {Mn} $ Atoms形成了Ab堆叠的Kagome lattices，自从观察到$ \ \ \ \ mn Mathrm {Mn} _3 \ ve \ ge \ Mathrm和Mathrm {Math imalos hall效应以来，都受到了极大的关注。 $ \ mathrm {mn} _3 \ mathrm {sn} $。尽管磁接地状态已知一段时间是具有诱导的平面磁矩的逆三角形结构，但关于最小磁性磁性磁性的磁性磁矩有几个争议。我们为这些化合物提供了一个基于对称性的一般模型，其中包括以前未报告的平面dzyaloshinskii-moriya相互作用以及各向异性交换相互作用。后者证明可以与单离子各向异性竞争，从而强烈影响基态构型和基本自旋波激发。最后，我们提出了计算出的弹性和非弹性中子散射强度，并指出了可能很重要的这些化合物中磁各向异性类型的实验评估。
$\mathrm{Mn}_3\mathrm{X}$ compounds in which the magnetic $\mathrm{Mn}$ atoms form AB-stacked kagome lattices have received a tremendous amount of attention since the observation of the anomalous Hall effect in $\mathrm{Mn}_3\mathrm{Ge}$ and $\mathrm{Mn}_3\mathrm{Sn}$. Although the magnetic ground state has been known for some time to be an inverse triangular structure with an induced in-plane magnetic moment, there have been several controversies about the minimal magnetic Hamiltonian. We present a general symmetry-based model for these compounds that includes a previously unreported interplane Dzyaloshinskii-Moriya interaction, as well as anisotropic exchange interactions. The latter are shown to compete with the single-ion anisotropy which strongly affects the ground state configurations and elementary spin-wave excitations. Finally, we present the calculated elastic and inelastic neutron scattering intensities and point to experimental assessment of the types of magnetic anisotropy in these compounds that may be important.
