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Photoinduced spin angular momentum transfer into an antiferromagnetic insulator

机译:光诱导的自旋角动量转移到反铁磁绝缘体中

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摘要

Spin angular momentum transfer into an antiferromagnetic (AFM) insulator is observed in a single-crystalline Fe/CoO/MgO(001) heterostructure by time-resolved magneto-optical Kerr effect. The transfer process is mediated by the Heisenberg exchange coupling between Fe and CoO spins. Spin angular momentum transfer to ordered AFM spins is independent of the external magnetic field and enhances the spin precession damping in Fe, which remains nearly invariant with temperature.
机译:通过时间分辨的磁光克尔效应在单晶Fe / CoO / MgO(001)异质结构中观察到自旋角动量转移到反铁磁(AFM)绝缘体中。 Fe和CoO自旋之间的Heisenberg交换耦合介导了转移过程。自旋角动量传递到有序的AFM自旋不依赖于外部磁场,并增强了Fe中的自旋进动阻尼,该阻尼随温度几乎不变。

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  • 来源
    《Physical review》 |2014年第9期|094428.1-094428.6|共6页
  • 作者单位

    Department of Applied Science, College of William & Mary, Williamsburg, VA 23187;

    Department of Applied Science, College of William & Mary, Williamsburg, VA 23187;

    Department of Applied Science, College of William & Mary, Williamsburg, VA 23187;

    Department of Physics, State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China;

    Department of Physics, State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China;

    Department of Physics, State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China;

    Department of Physics, State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China;

    Department of Physics, State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China;

    Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Fudan University, Shanghai, 200433, China;

    Department of Applied Science, College of William & Mary, Williamsburg, VA 23187;

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