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Electric-field control of spin accumulation direction for spin-orbit torques

Author

Listed:
  • Rahul Mishra

    (National University of Singapore)

  • Farzad Mahfouzi

    (California State University)

  • Dushyant Kumar

    (National University of Singapore)

  • Kaiming Cai

    (National University of Singapore)

  • Mengji Chen

    (National University of Singapore)

  • Xuepeng Qiu

    (Tongji University)

  • Nicholas Kioussis

    (California State University)

  • Hyunsoo Yang

    (National University of Singapore)

Abstract

Electric field is an energy-efficient tool that can be leveraged to control spin–orbit torques (SOTs). Although the amount of current-induced spin accumulation in a heavy metal (HM)/ferromagnet (FM) heterostructure can be regulated to a certain degree using an electric field in various materials, the control of its direction has remained elusive so far. Here, we report that both the direction and amount of current-induced spin accumulation at the HM/FM interface can be dynamically controlled using an electric field in an oxide capped SOT device. The applied electric field transports oxygen ions and modulates the HM/FM interfacial chemistry resulting in an interplay between the spin Hall and the interfacial torques which in turn facilitates a non-volatile and reversible control over the direction and magnitude of SOTs. Our electric-field controlled spin-orbitronics device can be programmed to behave either like the SOT systems with a positive spin Hall angle or a negative spin Hall angle.

Suggested Citation

  • Rahul Mishra & Farzad Mahfouzi & Dushyant Kumar & Kaiming Cai & Mengji Chen & Xuepeng Qiu & Nicholas Kioussis & Hyunsoo Yang, 2019. "Electric-field control of spin accumulation direction for spin-orbit torques," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-018-08274-8
    DOI: 10.1038/s41467-018-08274-8
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    Cited by:

    1. Yuhe Yang & Ping Wang & Jiali Chen & Delin Zhang & Chang Pan & Shuai Hu & Ting Wang & Wensi Yue & Cheng Chen & Wei Jiang & Lujun Zhu & Xuepeng Qiu & Yugui Yao & Yue Li & Wenhong Wang & Yong Jiang, 2024. "Orbital torque switching in perpendicularly magnetized materials," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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