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

Research output: Contribution to journalArticle

1 Scopus citations

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 languageEnglish (US)
Article number082406
JournalApplied Physics Letters
Volume111
Issue number8
DOIs
StatePublished - Aug 21 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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