Reduction of back switching by large damping ferromagnetic material

Tomohiro Taniguchi; Yohei Shiokawa; Tomoyuki Sasaki

doi:10.35848/1882-0786/abc6eb

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arXiv · 2011.05566

Reduction of back switching by large damping ferromagnetic material

Tomohiro Taniguchi·Yohei Shiokawa·Tomoyuki Sasaki

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Abstract

Recent studies on magnetization dynamics induced by spin-orbit torque have revealed a weak dependence of the critical current for magnetization switching on the damping constant of a ferromagnetic free layer. This study, however, reveals that the damping constant nevertheless plays a key role in magnetization switching induced by spin-orbit torque. An undesirable switching, returning to an initial state, named as back switching, occurs in a ferromagnet with an easy axis parallel to the current direction. Numerical and theoretical analyses reveal that back switching is strongly suppressed when the damping constant of the ferromagnet is large.

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Tomohiro Taniguchi, Yohei Shiokawa, Tomoyuki Sasaki. 2020-11-11. Reduction of back switching by large damping ferromagnetic material. https://doi.org/10.35848/1882-0786%2Fabc6eb

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