Phase estimation of spin-torque oscillator by nonlinear spin-torque diode effect

Terufumi Yamaguchi; Sumito Tsunegi; Tomohiro Taniguchi

doi:10.35848/1347-4065/ab6a28

Phase estimation of spin-torque oscillator by nonlinear spin-torque diode effect

Mesoscale and Nanoscale Physics 2020-01-28 v1 Other Condensed Matter Adaptation and Self-Organizing Systems

Authors: Terufumi Yamaguchi , Sumito Tsunegi , Tomohiro Taniguchi

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Abstract

A theoretical analysis is developed on spin-torque diode effect in nonlinear region. An analytical solution of the diode voltage generated from spin-torque oscillator by the rectification of an alternating current is derived. The diode voltage is revealed to depend nonlinearly on the phase difference between the oscillator and the alternating current. The validity of the analytical prediction is confirmed by numerical simulation of the Landau-Lifshitz-Gilbert equation. The results indicate that the spin-torque diode effect is useful to evaluate the phase of a spin-torque oscillator in forced synchronization state.

Keywords

spin current spin chains

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@article{arxiv.2001.09247,
  title  = {Phase estimation of spin-torque oscillator by nonlinear spin-torque diode effect},
  author = {Terufumi Yamaguchi and Sumito Tsunegi and Tomohiro Taniguchi},
  journal= {arXiv preprint arXiv:2001.09247},
  year   = {2020}
}

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5 pages, 3 figures

Phase estimation of spin-torque oscillator by nonlinear spin-torque diode effect

Abstract

Keywords

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