Work

Reduction of current for magnetization switching in a nanomagnet with perpendicular anisotropy by spin-splitter torque

Year: 2025

Type: article

Abstract: This study investigates spin-splitter torque (SST) for magnetization switching in nanoscale magnets with perpendicular anisotropy, aiming to reduce current requirements in magnetic memory devices. A micromagnetic model shows that optimizing the spin polar angle ( θ p ) can lower the threshold current density by 1.6–27 times compared to the traditional spin–orbit torque method. A θ p above ∼134° ensures high switching probability, while tailoring the current pulse shape cuts switching error rates by about 200 times. The findings highlight SST’s promise for energy-efficient and reliable switching in future magnetic random-access memory (MRAM) technologies.

Source: Applied Physics Express

DOI: 10.35848/1882-0786/adfef3

Authors: Tomoki Watanabe, Keisuke Yamada, Yoshinobu Nakatani

Institutions: University of Electro-Communications, Gifu University

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,365

Funder: Japan Society for the Promotion of Science