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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.
Scientific Reports
|June 1, 2021
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.
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.
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