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Spin-current probe for phase transition in an insulator

Author

Listed:
  • Zhiyong Qiu

    (WPI Advanced Institute for Materials Research, Tohoku University
    Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency)

  • Jia Li

    (University of California at Berkeley)

  • Dazhi Hou

    (WPI Advanced Institute for Materials Research, Tohoku University
    Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency)

  • Elke Arenholz

    (Advanced Light Source, Lawrence Berkeley National Laboratory)

  • Alpha T. N’Diaye

    (Advanced Light Source, Lawrence Berkeley National Laboratory)

  • Ali Tan

    (University of California at Berkeley)

  • Ken-ichi Uchida

    (Institute for Materials Research, Tohoku University
    PRESTO, Japan Science and Technology Agency)

  • Koji Sato

    (WPI Advanced Institute for Materials Research, Tohoku University)

  • Satoshi Okamoto

    (Oak Ridge National Laboratory)

  • Yaroslav Tserkovnyak

    (University of California)

  • Z. Q. Qiu

    (University of California at Berkeley)

  • Eiji Saitoh

    (WPI Advanced Institute for Materials Research, Tohoku University
    Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency
    Institute for Materials Research, Tohoku University
    Advanced Science Research Center, Japan Atomic Energy Agency)

Abstract

Spin fluctuation and transition have always been one of the central topics of magnetism and condensed matter science. Experimentally, the spin fluctuation is found transcribed onto scattering intensity in the neutron-scattering process, which is represented by dynamical magnetic susceptibility and maximized at phase transitions. Importantly, a neutron carries spin without electric charge, and therefore it can bring spin into a sample without being disturbed by electric energy. However, large facilities such as a nuclear reactor are necessary. Here we show that spin pumping, frequently used in nanoscale spintronic devices, provides a desktop microprobe for spin transition; spin current is a flux of spin without an electric charge and its transport reflects spin excitation. We demonstrate detection of antiferromagnetic transition in ultra-thin CoO films via frequency-dependent spin-current transmission measurements, which provides a versatile probe for phase transition in an electric manner in minute devices.

Suggested Citation

  • Zhiyong Qiu & Jia Li & Dazhi Hou & Elke Arenholz & Alpha T. N’Diaye & Ali Tan & Ken-ichi Uchida & Koji Sato & Satoshi Okamoto & Yaroslav Tserkovnyak & Z. Q. Qiu & Eiji Saitoh, 2016. "Spin-current probe for phase transition in an insulator," Nature Communications, Nature, vol. 7(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12670
    DOI: 10.1038/ncomms12670
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    Cited by:

    1. Pavlo Makushko & Tobias Kosub & Oleksandr V. Pylypovskyi & Natascha Hedrich & Jiang Li & Alexej Pashkin & Stanislav Avdoshenko & René Hübner & Fabian Ganss & Daniel Wolf & Axel Lubk & Maciej Oskar Lie, 2022. "Flexomagnetism and vertically graded Néel temperature of antiferromagnetic Cr2O3 thin films," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    2. Farhan Nur Kholid & Dominik Hamara & Ahmad Faisal Bin Hamdan & Guillermo Nava Antonio & Richard Bowen & Dorothée Petit & Russell Cowburn & Roman V. Pisarev & Davide Bossini & Joseph Barker & Chiara Ci, 2023. "The importance of the interface for picosecond spin pumping in antiferromagnet-heavy metal heterostructures," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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