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Effective phase noise considerations in magnon based parametric excitations.

Aneesh Venugopal1, R H Victora2

  • 1Department of Electrical and Computer Engineering, University of Minnesota Twin Cities, Minneapolis, 55455, USA. venug012@umn.edu.

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|June 1, 2021
PubMed
Summary

Phase-noise significantly impacts magnon nonlinearities. This study analytically predicts and numerically verifies how Gaussian phase-noise affects magnon threshold fields and growth rates, crucial for device engineering.

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Area of Science:

  • Condensed Matter Physics
  • Nonlinear Dynamics
  • Spintronics

Background:

  • Magnon-based parametric processes are vital for nonlinear phenomena.
  • The influence of phase-noise on these nonlinear properties is not well understood.
  • Understanding phase-noise effects is critical for advanced device applications.

Purpose of the Study:

  • To investigate the direct impact of phase-noise on magnon-based nonlinear properties.
  • To analytically predict the behavior of threshold-field and growth rate under phase-noise.
  • To validate theoretical predictions using micromagnetic simulations.

Main Methods:

  • Utilized analytical techniques typically applied in hydrodynamics.
  • Developed theoretical models to describe magnon nonlinear phenomena with phase-noise.
  • Performed micromagnetic simulations to verify analytical predictions.

Main Results:

  • Successfully predicted the behavior of threshold-field and growth rate in the presence of Gaussian phase-noise.
  • Demonstrated a direct correlation between phase-noise and nonlinear properties.
  • Micromagnetic simulations confirmed the analytical predictions.

Conclusions:

  • Phase-noise has significant qualitative and quantitative consequences on nonlinear magnon properties.
  • The study provides a theoretical framework and numerical validation for understanding these effects.
  • Results are crucial for the design and engineering of spintronic devices.