论文标题
K $ _ {2} $ Mn $ _3 $（ASO $ _ {4} $）磁性Weyl semimetal in K $ _ {2} $ Mn
Magnetic Weyl semimetal in K$_{2}$Mn$_3$(AsO$_{4}$)$_3$ with the minimum number of Weyl points
论文作者
论文摘要
由于可能存在与Weyl相关的现象，磁性Weyl半法的“氢原子”最近受到了越来越多的关注。在这里，我们报告了铁磁性alluaudite-type复合k $ _ {2} $ mn $ _3 $（ASO $ _ {4} $）$ _ 3 $的非平凡电子结构。它仅通过两倍的旋转对称性在$ z $方向上限制了一对Weyl点，从而导致Fermi Arc表面状态极长。此外，对其低能有效模型的研究导致发现各种拓扑超导状态，例如Weyl超导体的“氢原子”。我们的工作提供了一个可行的平台，以探索与Weyl点相关的内在属性以及相关的设备应用程序。
The "Hydrogen atom" of magnetic Weyl semimetals, with the minimum number of Weyl points, have received growing attention recently due to the possible presence of Weyl-related phenomena. Here, we report a nontrivial electronic structure of the ferromagnetic alluaudite-type compound K$_{2}$Mn$_3$(AsO$_{4}$)$_3$. It exhibits only a pair of Weyl points constrained in the $z$-direction by the two-fold rotation symmetry, leading to extremely long Fermi arc surface states. In addition, the study of its low-energy effective model results in the discovery of various topological superconducting states, such as the "hydrogen atom" of a Weyl superconductor. Our work provides a feasible platform to explore the intrinsic properties related to Weyl points, and the related device applications.
