论文标题
通过控制DIRAC半准候选中的旋转重新定向来调整量子传输，欧盟$ _ {1-x} $ sr $ _ {x} $ MNSB $ _ {2} $
Tuning quantum transport by controlling spin reorientations in Dirac semimetal candidates Eu$_{1-x}$Sr$_{x}$MnSb$_{2}$
论文作者
论文摘要
由于这些材料对新型Spintronic设备的潜在应用具有巨大的希望，因此磁性拓扑半学引起了极大的关注。在这里，我们报告了EU $ _ {1-x} $ _ {1-x} $ sr $ _ {x} $ MNSB $ _ {2} $驱动的非磁性eu Eu网站上的非磁性SR掺杂驱动的晶格，欧盟磁性和拓扑半金属行为之间的紧密相互作用。不同类型的欧盟自旋重新定位可通过SR浓度，温度或磁场可控制，并与2D SB层产生的Dirac费物的量子传输特性耦合。我们的研究通过控制自旋重新定位，开辟了一条新的途径，以实现外来磁性和拓扑半金属状态。通过此处证明的非磁性元素代替稀土位点的有效策略可能适用于Amnch $ _ {2} $（a =稀有元素； ch = bi/sb）家族和其他分层化合物的广泛变化，涉及空间分离的稀有稀有近美和过渡金属层。
Magnetic topological semimetals have attracted intense attention recently since these materials carry a great promise for potential applications in novel spintronic devices. Here, we report an intimate interplay between lattice, Eu magnetic order and topological semimetallic behavior in Eu$_{1-x}$Sr$_{x}$MnSb$_{2}$ driven by nonmagnetic Sr doping on magnetic Eu site. Different types of Eu spin reorientations are controllable by the Sr concentration, temperature or magnetic field, and coupled to the quantum transport properties of Dirac fermions generated by the 2D Sb layers. Our study opens a new pathway to achieving exotic magnetic order and topological semimetallic state via controlling spin reorientation. The effective strategy of substituting rare-earth site by nonmagnetic element demonstrated here may be applicable to the AMnCh$_{2}$ (A=rare-earth elements; Ch=Bi/Sb) family and a wide variation of other layered compounds involving spatially separated rare-earth and transition metal layers.
