AIP Advances (Jul 2015)

Modeling of magnetization precession in spin-torque nano-oscillators with a tilted polarizer

  • Gang Lv,
  • Hong Zhang,
  • Xuecheng Cao,
  • Yaowen Liu,
  • Zhiwei Hou,
  • Yufeng Qin,
  • Guihua Li,
  • Linhui Wang

DOI
https://doi.org/10.1063/1.4927585
Journal volume & issue
Vol. 5, no. 7
pp. 077171 – 077171-6

Abstract

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The spin-torque induced magnetization precession dynamics are studied in a spin-valve with a tilted spin polarizer. Macrospin simulations demonstrate that the frequency of precession state depends both on the external DC current and the intrinsic parameters of devices such as the tilted angle of spin polarizer, the damping factor and saturation magnetization of the free layer. The dependence role of those parameters is characterized by phase diagrams. An analytical model is presented, which can successfully interpret the features of precession frequency.