Observation of the magnetization metastable state in a perpendicularly magnetized nanopillar with asymmetric potential landscape

Shuichi Iwakiri, Satoshi Sugimoto, Yasuhiro Niimi, Kensuke Kobayashi, Yukiko K. Takahashi, Shinya Kasai

研究成果: Article査読

抄録

The effect of spin torque on magnetization is investigated in an MgO/CoFeB/W perpendicularly magnetized nanopillar with an asymmetric bistable potential landscape. While conventional pulse-current-induced magnetization switching has been implemented, a metastable switched state is observed under direct current (DC). The mean dwell time of the metastable state depends not only on the DC amplitude but also on the current direction. These results suggest that the damping spin Hall torque suppresses the magnetization fluctuation and realizes the metastable state.

本文言語English
論文番号092407
ジャーナルApplied Physics Letters
115
9
DOI
出版ステータスPublished - 2019 8 26
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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