Micromagnetic simulation of electric field-modulation on precession dynamics of spin torque nano-oscillator

Congpeng Zhao; Xingqiao Ma; Houbing Huang; Zhuhong Liu; Hasnain Mehdi Jafri; Jianjun Wang; Xueyun Wang; Long Qing Chen

doi:10.1063/1.5000245

Micromagnetic simulation of electric field-modulation on precession dynamics of spin torque nano-oscillator

Congpeng Zhao, Xingqiao Ma^*, Houbing Huang, Zhuhong Liu, Hasnain Mehdi Jafri, Jianjun Wang, Xueyun Wang, Long Qing Chen

^*Corresponding author for this work

School of Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Understanding electric field effects on precession dynamics is crucial to the design of spin transfer torque devices for improving the performance in nano-oscillator. In this letter, the precession dynamics of a CoFeB/MgO multi-layer structured nano-oscillator under externally applied electric field is predicted using a micromagnetic simulation. It is revealed that the electric field can modify the range of oscillation spectra in single frequency mode. With the increase in electric field, there is a red-shift of the resonant frequency. When a positive electric field pulse is applied, a phase lag of the spin precession is induced, which is proportional to the pulse amplitude and duration. The present work is expected to stimulate future experimental efforts on designing devices with electric-field modulated spin transfer torque nano-oscillators.

Original language	English
Article number	082406
Journal	Applied Physics Letters
Volume	111
Issue number	8
DOIs	https://doi.org/10.1063/1.5000245
Publication status	Published - 21 Aug 2017

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title = "Micromagnetic simulation of electric field-modulation on precession dynamics of spin torque nano-oscillator",

abstract = "Understanding electric field effects on precession dynamics is crucial to the design of spin transfer torque devices for improving the performance in nano-oscillator. In this letter, the precession dynamics of a CoFeB/MgO multi-layer structured nano-oscillator under externally applied electric field is predicted using a micromagnetic simulation. It is revealed that the electric field can modify the range of oscillation spectra in single frequency mode. With the increase in electric field, there is a red-shift of the resonant frequency. When a positive electric field pulse is applied, a phase lag of the spin precession is induced, which is proportional to the pulse amplitude and duration. The present work is expected to stimulate future experimental efforts on designing devices with electric-field modulated spin transfer torque nano-oscillators.",

author = "Congpeng Zhao and Xingqiao Ma and Houbing Huang and Zhuhong Liu and Jafri, {Hasnain Mehdi} and Jianjun Wang and Xueyun Wang and Chen, {Long Qing}",

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AU - Zhao, Congpeng

AU - Ma, Xingqiao

AU - Huang, Houbing

AU - Liu, Zhuhong

AU - Jafri, Hasnain Mehdi

AU - Wang, Jianjun

AU - Wang, Xueyun

AU - Chen, Long Qing

PY - 2017/8/21

Y1 - 2017/8/21

N2 - Understanding electric field effects on precession dynamics is crucial to the design of spin transfer torque devices for improving the performance in nano-oscillator. In this letter, the precession dynamics of a CoFeB/MgO multi-layer structured nano-oscillator under externally applied electric field is predicted using a micromagnetic simulation. It is revealed that the electric field can modify the range of oscillation spectra in single frequency mode. With the increase in electric field, there is a red-shift of the resonant frequency. When a positive electric field pulse is applied, a phase lag of the spin precession is induced, which is proportional to the pulse amplitude and duration. The present work is expected to stimulate future experimental efforts on designing devices with electric-field modulated spin transfer torque nano-oscillators.

AB - Understanding electric field effects on precession dynamics is crucial to the design of spin transfer torque devices for improving the performance in nano-oscillator. In this letter, the precession dynamics of a CoFeB/MgO multi-layer structured nano-oscillator under externally applied electric field is predicted using a micromagnetic simulation. It is revealed that the electric field can modify the range of oscillation spectra in single frequency mode. With the increase in electric field, there is a red-shift of the resonant frequency. When a positive electric field pulse is applied, a phase lag of the spin precession is induced, which is proportional to the pulse amplitude and duration. The present work is expected to stimulate future experimental efforts on designing devices with electric-field modulated spin transfer torque nano-oscillators.

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Micromagnetic simulation of electric field-modulation on precession dynamics of spin torque nano-oscillator

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