Voltage control of spin-orbit torque in Pd/Co/Pd/HfO x

Takamasa Hirai, Yuki Hibino, Kento Hasegawa, Makoto Kohda, Tomohiro Koyama, Daichi Chiba

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Voltage control of current-induced spin-orbit torque (SOT) in an in-plane-magnetized Pd/Co/Pd system with a low-temperature-deposited HfO x and a gate electrode on top is studied. An application of the gate electric field to the HfO x layer is to induce a non-volatile electrochemical effect from the Pd/HfO x interface. By means of low-frequency harmonic Hall measurements, the voltage modulation of both damping-like and field-like SOT is obtained. The sign of the voltage-induced SOT modification is found to be reversed by changing the top Pd thickness. Our finding is expected to facilitate the efficient active manipulation of SOT.

本文言語English
論文番号123005
ジャーナルApplied Physics Express
13
12
DOI
出版ステータスPublished - 2020 12 1

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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