中国物理B ›› 2018, Vol. 27 ›› Issue (6): 67502-067502.doi: 10.1088/1674-1056/27/6/067502

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Voltage control of magnetization switching and dynamics

Hong-Yu Wen(文宏玉), Jian-Bai Xia(夏建白)   

  1. The State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • 收稿日期:2017-11-22 修回日期:2018-03-09 出版日期:2018-06-05 发布日期:2018-06-05
  • 通讯作者: Jian-Bai Xia E-mail:xiajb@semi.ac.cn
  • 基金资助:
    Project supported by the Advanced Research Plan of the Chinese Academy of Sciences (Grant No.QYZDY-SSW-JSC015).

Voltage control of magnetization switching and dynamics

Hong-Yu Wen(文宏玉), Jian-Bai Xia(夏建白)   

  1. The State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • Received:2017-11-22 Revised:2018-03-09 Online:2018-06-05 Published:2018-06-05
  • Contact: Jian-Bai Xia E-mail:xiajb@semi.ac.cn
  • Supported by:
    Project supported by the Advanced Research Plan of the Chinese Academy of Sciences (Grant No.QYZDY-SSW-JSC015).

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摘要： The voltage controlled magnetic switching effect is verified experimentally. The Landau-Lifshitz-Gilbert (LLG) equation is used to study the voltage controlled magnetic switching. It is found that the initial values of magnetic moment components are critical for the switching effect, which should satisfy a definite condition. The external magnetic field which affects only the oscillation period should be comparable to the internal magnetic field. If the external magnetic field is too small, the switching effect will disappear. The precessions of mx and my are the best for the tilt angle of the external magnetic field θt=0°, i.e., the field is perpendicular to the sample plane.

关键词: magnetic switching, voltage control, spin transfer torque, Landau-Lifshitz-Gilbert (LLG) equation

Abstract: The voltage controlled magnetic switching effect is verified experimentally. The Landau-Lifshitz-Gilbert (LLG) equation is used to study the voltage controlled magnetic switching. It is found that the initial values of magnetic moment components are critical for the switching effect, which should satisfy a definite condition. The external magnetic field which affects only the oscillation period should be comparable to the internal magnetic field. If the external magnetic field is too small, the switching effect will disappear. The precessions of mx and my are the best for the tilt angle of the external magnetic field θt=0°, i.e., the field is perpendicular to the sample plane.

Key words: magnetic switching, voltage control, spin transfer torque, Landau-Lifshitz-Gilbert (LLG) equation

中图分类号:  (Magnetization dynamics)

  • 75.78.-n
75.30.Gw (Magnetic anisotropy) 77.80.Fm (Switching phenomena)