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Non-volatile electric control of spin-orbit torques in an oxide two-dimensional electron gas

Author

Listed:
  • Cécile Grezes

    (Université Grenoble Alpes/CEA/IRIG/SPINTEC)

  • Aurélie Kandazoglou

    (Université Grenoble Alpes/CEA/IRIG/SPINTEC)

  • Maxen Cosset-Cheneau

    (Université Grenoble Alpes/CEA/IRIG/SPINTEC
    University of Groningen)

  • Luis M. Vicente Arche

    (Université Paris-Saclay)

  • Paul Noël

    (Université Grenoble Alpes/CEA/IRIG/SPINTEC
    ETH Zurich)

  • Paolo Sgarro

    (Université Grenoble Alpes/CEA/IRIG/SPINTEC)

  • Stephane Auffret

    (Université Grenoble Alpes/CEA/IRIG/SPINTEC)

  • Kevin Garello

    (Université Grenoble Alpes/CEA/IRIG/SPINTEC)

  • Manuel Bibes

    (Université Paris-Saclay)

  • Laurent Vila

    (Université Grenoble Alpes/CEA/IRIG/SPINTEC)

  • Jean-Philippe Attané

    (Université Grenoble Alpes/CEA/IRIG/SPINTEC
    Institut Universitaire de France)

Abstract

Spin-orbit torques (SOTs) have opened a novel way to manipulate the magnetization using in-plane current, with a great potential for the development of fast and low power information technologies. It has been recently shown that two-dimensional electron gases (2DEGs) appearing at oxide interfaces provide a highly efficient spin-to-charge current interconversion. The ability to manipulate 2DEGs using gate voltages could offer a degree of freedom lacking in the classical ferromagnetic/spin Hall effect bilayers for spin-orbitronics, in which the sign and amplitude of SOTs at a given current are fixed by the stack structure. Here, we report the non-volatile electric-field control of SOTs in an oxide-based Rashba-Edelstein 2DEG. We demonstrate that the 2DEG is controlled using a back-gate electric-field, providing two remanent and switchable states, with a large resistance contrast of 1064%. The SOTs can then be controlled electrically in a non-volatile way, both in amplitude and in sign. This achievement in a 2DEG-CoFeB/MgO heterostructures with large perpendicular magnetization further validates the compatibility of oxide 2DEGs for magnetic tunnel junction integration, paving the way to the advent of electrically reconfigurable SOT MRAMS circuits, SOT oscillators, skyrmion and domain-wall-based devices, and magnonic circuits.

Suggested Citation

  • Cécile Grezes & Aurélie Kandazoglou & Maxen Cosset-Cheneau & Luis M. Vicente Arche & Paul Noël & Paolo Sgarro & Stephane Auffret & Kevin Garello & Manuel Bibes & Laurent Vila & Jean-Philippe Attané, 2023. "Non-volatile electric control of spin-orbit torques in an oxide two-dimensional electron gas," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37866-2
    DOI: 10.1038/s41467-023-37866-2
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    References listed on IDEAS

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    1. Ioan Mihai Miron & Kevin Garello & Gilles Gaudin & Pierre-Jean Zermatten & Marius V. Costache & Stéphane Auffret & Sébastien Bandiera & Bernard Rodmacq & Alain Schuhl & Pietro Gambardella, 2011. "Perpendicular switching of a single ferromagnetic layer induced by in-plane current injection," Nature, Nature, vol. 476(7359), pages 189-193, August.
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