2020/10/20 by Qiang Zhang, Jinyu Liu, Huibo Cao +7 · 13 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Band gap #Condensed matter physics #Doping #Ferromagnetism #Magnetic field #Materials science #Nanotechnology #Physics #Quantum #Quantum mechanics #Rare earth #Rare-earth and actinide compounds #Semimetal #Spintronics #Topological Materials and Phenomena #Topology (electrical circuits) #cond-mat.str-el
paper · pdf · open access · doi:10.1038/s41427-022-00369-5
published in NPG Asia Materials 14(1) (Nature Portfolio) · 25 pages, 4 figures, 2 tables, plus supplementary materials
arxiv created 2020/10/20 · openalex publication_date 2022/03/10 · arxiv updated 2022/03/18 · openalex created_date 2022/04/03 · openalex updated_date 2026/08/06
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 Eu1-xSrxMnSb2 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 AMnCh2 (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.