Spin-torque-driven antiferromagnetic resonance.

ABSTRACT: The intrinsic fast dynamics make antiferromagnetic spintronics a promising avenue for faster data processing. Ultrafast antiferromagnetic resonance-generated spin current provides valuable access to antiferromagnetic spin dynamics. However, the inverse effect, spin-torque-driven antiferromagnetic resonance (ST-AFMR), which is attractive for practical utilization of fast devices but seriously impeded by difficulties in controlling and detecting Néel vectors, remains elusive. We observe ST-AFMR in Y₃Fe₅O₁₂/α-Fe₂O₃/Pt at room temperature. The Néel vector oscillates and contributes to voltage signal owing to antiferromagnetic negative spin Hall magnetoresistance-induced spin rectification effect, which has the opposite sign to ferromagnets

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC10786412 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature