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Spin inversion in graphene spin valves by gate-tunable magnetic proximity effect at one-dimensional contacts

Author

Listed:
  • Jinsong Xu

    (The Ohio State University)

  • Simranjeet Singh

    (The Ohio State University)

  • Jyoti Katoch

    (The Ohio State University)

  • Guanzhong Wu

    (The Ohio State University)

  • Tiancong Zhu

    (The Ohio State University)

  • Igor Žutić

    (University at Buffalo, State University of New York)

  • Roland K. Kawakami

    (The Ohio State University)

Abstract

Graphene has remarkable opportunities for spintronics due to its high mobility and long spin diffusion length, especially when encapsulated in hexagonal boron nitride (h-BN). Here, we demonstrate gate-tunable spin transport in such encapsulated graphene-based spin valves with one-dimensional (1D) ferromagnetic edge contacts. An electrostatic backgate tunes the Fermi level of graphene to probe different energy levels of the spin-polarized density of states (DOS) of the 1D ferromagnetic contact, which interact through a magnetic proximity effect (MPE) that induces ferromagnetism in graphene. In contrast to conventional spin valves, where switching between high- and low-resistance configuration requires magnetization reversal by an applied magnetic field or a high-density spin-polarized current, we provide an alternative path with the gate-controlled spin inversion in graphene.

Suggested Citation

  • Jinsong Xu & Simranjeet Singh & Jyoti Katoch & Guanzhong Wu & Tiancong Zhu & Igor Žutić & Roland K. Kawakami, 2018. "Spin inversion in graphene spin valves by gate-tunable magnetic proximity effect at one-dimensional contacts," Nature Communications, Nature, vol. 9(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05358-3
    DOI: 10.1038/s41467-018-05358-3
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    Cited by:

    1. Guangyi Chen & Shaomian Qi & Jianqiao Liu & Di Chen & Jiongjie Wang & Shili Yan & Yu Zhang & Shimin Cao & Ming Lu & Shibing Tian & Kangyao Chen & Peng Yu & Zheng Liu & X. C. Xie & Jiang Xiao & Ryuichi, 2021. "Electrically switchable van der Waals magnon valves," Nature Communications, Nature, vol. 12(1), pages 1-5, December.
    2. Wenkai Zhu & Yingmei Zhu & Tong Zhou & Xianpeng Zhang & Hailong Lin & Qirui Cui & Faguang Yan & Ziao Wang & Yongcheng Deng & Hongxin Yang & Lixia Zhao & Igor Žutić & Kirill D. Belashchenko & Kaiyou Wa, 2023. "Large and tunable magnetoresistance in van der Waals ferromagnet/semiconductor junctions," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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