Readout of an antiferromagnetic spintronics system by strong exchange coupling of Mn₂Au and Permalloy.

ABSTRACT: In antiferromagnetic spintronics, the read-out of the staggered magnetization or Néel vector is the key obstacle to harnessing the ultra-fast dynamics and stability of antiferromagnets for novel devices. Here, we demonstrate strong exchange coupling of Mn₂Au, a unique metallic antiferromagnet that exhibits Néel spin-orbit torques, with thin ferromagnetic Permalloy layers. This allows us to benefit from the well-established read-out methods of ferromagnets, while the essential advantages of antiferromagnetic spintronics are only slightly diminished. We show one-to-one imprinting of the antiferromagnetic on the ferromagnetic domain pattern. Conversely, alignment of the Permalloy magnetization reorients the Mn₂Au Néel vector, an effect, which can be restricted to large m

SUBMITTER: Bommanaboyena SP 

PROVIDER: S-EPMC8586249 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature