Direct and Inverse Spin Splitting Effects in Altermagnetic RuO₂.

ABSTRACT: Recently, the altermagnetic materials with spin splitting effect (SSE), have drawn significant attention due to their potential to the flexible control of the spin polarization by the Néel vector. Here, the direct and inverse altermagnetic SSE (ASSE) in the (101)-oriented RuO₂ film with the tilted Néel vector are reported. First, the spin torque along the x-, y-, and z-axis is detected from the spin torque-induced ferromagnetic resonance (ST-FMR), and the z-spin torque emerges when the electric current is along the [010] direction, showing the anisotropic spin splitting of RuO₂. Further, the current-induced modulation of damping is used to quantify the damping-like torque efficiency (ξ_DL) in RuO₂/Py, and an anisotropic ξ_DL is obtained

SUBMITTER: Guo Y 

PROVIDER: S-EPMC11220717 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature