Effective electrical manipulation of a topological antiferromagnet by orbital torques.

ABSTRACT: The electrical control of the non-trivial topology in Weyl antiferromagnets is of great interest for the development of next-generation spintronic devices. Recent studies suggest that the spin Hall effect can switch the topological antiferromagnetic order. However, the switching efficiency remains relatively low. Here, we demonstrate the effective manipulation of antiferromagnetic order in the Weyl semimetal Mn₃Sn using orbital torques originating from either metal Mn or oxide CuO_x. Although Mn₃Sn can convert orbital current to spin current on its own, we find that inserting a heavy metal layer, such as Pt, of appropriate thickness can effectively reduce the critical switching current density by one order of magnitude. In addition, we show that the memristo

SUBMITTER: Zheng Z 

PROVIDER: S-EPMC10811228 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature