Autoresonant control of the magnetization switching in single-domain nanoparticles

Abstract

The ability to control the magnetization switching in nanoscale devices is a crucial step for the development of fast and reliable techniques to store and process information. Here we show that the switching dynamics can be controlled efficiently using a microwave field with slowly varying frequency (autoresonance). This technique allowed us to reduce the applied field by more than $30$ compared to competing approaches, with no need to fine-tune the field parameters. For a linear chain of nanoparticles the effect is even more dramatic, as the dipolar interactions tend to cancel out the effect of the temperature. Simultaneous switching of all the magnetic moments can thus be efficiently triggered on a nanosecond timescale.

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• Optimal switching of a nanomagnet assisted by microwaves
• Magnetization reversal in isolated and interacting single-domain nanoparticles
• Analytic treatment of the precessional (ballistic) contribution to the conventional magnetic switching

Cited by in corpus (12)

• Autoresonance in oscillating systems with combined excitation and weak dissipation
• Optimal protocol for spin-orbit torque switching of a perpendicular nanomagnet
• Optimal control of magnetization reversal in a monodomain particle by means of applied magnetic field
• Subnanosecond magnetization reversal of magnetic nanoparticle driven by chirp microwave field pulse
• Thermally assisted magnetization reversal of a magnetic nanoparticle driven by a down-chirp microwave field pulse
• Capture into parametric autoresonance in the presence of noise
• Micromagnetic simulations of the size dependence of the Curie temperature in ferromagnetic nanowires and nanolayers
• Fast magnetization reversal of a magnetic nanoparticle induced by cosine chirp microwave field pulse
• Narrow autoresonant magnetization structures in finite length ferromagnetic nanoparticles
• Excitation and control of large amplitude standing magnetization waves
• Spin-torque switching and control using chirped oscillating currents
• Shape anisotropy effect on magnetization reversal induced by linear down chirp pulse