Enhanced Field-Like Torque Generated from the Anisotropic Spin-Split Effect in Triple-Domain RuO₂ for Energy-Efficient Spin-Orbit Torque Magnetic Random-Access Memory.

ABSTRACT: Spin-current generation via the anisotropic spin-split effect has been predicted in antiferromagnetic RuO₂, where the symmetry of RuO₂ plays a critical role in spin-orbit torque (SOT). This phenomenon has garnered attention for its potential to enable energy-efficient spintronic devices, such as SOT magnetic random-access memory. In this study, a high-quality RuO₂ (100) epitaxial film with a well-controlled triple-domain-structure is analyzed, and it is confirmed that out-of-plane spin-current generation is independent of the Néel vector ( N⃗$\vec N$ ). This N⃗$\vec N$ independence of the out-of-plane spin current leads to equal SOT values for the two orthogonal currents. The spin-split effect-induced SOT demonstrates a field-like (FL) torque efficiency (-0

SUBMITTER: Nguyen TVA 

PROVIDER: S-EPMC12407376 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature