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Electrically induced and detected Néel vector reversal in a collinear antiferromagnet

Author

Listed:
  • J. Godinho

    (Czech Academy of Sciences
    Charles University in Prague)

  • H. Reichlová

    (Czech Academy of Sciences
    Technische Universität Dresden)

  • D. Kriegner

    (Czech Academy of Sciences
    Max Planck Institute for Chemical Physics of Solids)

  • V. Novák

    (Czech Academy of Sciences)

  • K. Olejník

    (Czech Academy of Sciences)

  • Z. Kašpar

    (Czech Academy of Sciences)

  • Z. Šobáň

    (Czech Academy of Sciences)

  • P. Wadley

    (University Of Nottingham)

  • R. P. Campion

    (University Of Nottingham)

  • R. M. Otxoa

    (Hitachi Europe LTD
    Donostia International Physics Center)

  • P. E. Roy

    (Hitachi Europe LTD)

  • J. Železný

    (Czech Academy of Sciences)

  • T. Jungwirth

    (Czech Academy of Sciences
    University Of Nottingham)

  • J. Wunderlich

    (Czech Academy of Sciences
    Hitachi Europe LTD)

Abstract

Antiferromagnets are enriching spintronics research by many favorable properties that include insensitivity to magnetic fields, neuromorphic memory characteristics, and ultra-fast spin dynamics. Designing memory devices with electrical writing and reading is one of the central topics of antiferromagnetic spintronics. So far, such a combined functionality has been demonstrated via 90° reorientations of the Néel vector generated by the current-induced spin orbit torque and sensed by the linear-response anisotropic magnetoresistance. Here we show that in the same antiferromagnetic CuMnAs films as used in these earlier experiments we can also control 180° Néel vector reversals by switching the polarity of the writing current. Moreover, the two stable states with opposite Néel vector orientations in this collinear antiferromagnet can be electrically distinguished by measuring a second-order magnetoresistance effect. We discuss the general magnetic point group symmetries allowing for this electrical readout effect and its specific microscopic origin in CuMnAs.

Suggested Citation

  • J. Godinho & H. Reichlová & D. Kriegner & V. Novák & K. Olejník & Z. Kašpar & Z. Šobáň & P. Wadley & R. P. Campion & R. M. Otxoa & P. E. Roy & J. Železný & T. Jungwirth & J. Wunderlich, 2018. "Electrically induced and detected Néel vector reversal in a collinear antiferromagnet," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-07092-2
    DOI: 10.1038/s41467-018-07092-2
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    Cited by:

    1. Yang Cheng & Egecan Cogulu & Rachel D. Resnick & Justin J. Michel & Nahuel N. Statuto & Andrew D. Kent & Fengyuan Yang, 2022. "Third harmonic characterization of antiferromagnetic heterostructures," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    2. Kenta Kimura & Yutaro Otake & Tsuyoshi Kimura, 2022. "Visualizing rotation and reversal of the Néel vector through antiferromagnetic trichroism," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    3. Jaimin Kang & Jeongchun Ryu & Jong-Guk Choi & Taekhyeon Lee & Jaehyeon Park & Soogil Lee & Hanhwi Jang & Yeon Sik Jung & Kab-Jin Kim & Byong-Guk Park, 2021. "Current-induced manipulation of exchange bias in IrMn/NiFe bilayer structures," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    4. Y. Behovits & A. L. Chekhov & S. Yu. Bodnar & O. Gueckstock & S. Reimers & Y. Lytvynenko & Y. Skourski & M. Wolf & T. S. Seifert & O. Gomonay & M. Kläui & M. Jourdan & T. Kampfrath, 2023. "Terahertz Néel spin-orbit torques drive nonlinear magnon dynamics in antiferromagnetic Mn2Au," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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