Current-induced dynamics of composite free layer with antiferromagnetic interlayer exchange coupling
Pavel Bal\'a\v{z}, J\'ozef Barna\'s
TL;DR
This paper investigates the theoretical current-induced magnetic dynamics in spin valves with composite free layers coupled antiferromagnetically, revealing distinct behaviors from ferrimagnetic counterparts and identifying switching conditions and dynamical modes.
Contribution
It provides a theoretical analysis of current-induced dynamics in composite free layers with antiferromagnetic coupling, including analytical models and macrospin simulations.
Findings
Synthetic antiferromagnets exhibit different dynamics than ferrimagnets.
Conditions for switching the composite free layer are identified.
Various self-sustained dynamical modes are characterized.
Abstract
Current-induced dynamics in spin valves including composite free layer with antiferromagnetic interlayer exchange coupling is studied theoretically within the diffusive transport regime. We show that current-induced dynamics of a synthetic antiferromagnet is significantly different from dynamics of a synthetic ferrimagnet. From macrospin simulations we obtain conditions for switching the composite free layer, as well as for appearance of various self-sustained dynamical modes. Numerical simulations are compared with simple analytical models of critical current based on linearized Landau-Lifshitz-Gilbert equation.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.