Effect of microwave irradiation on spin-torque-driven magnetization precession in nanopillars with magnetic perpendicular anisotropy - Université de Lorraine Access content directly
Journal Articles Physical Review B: Condensed Matter and Materials Physics (1998-2015) Year : 2011

Effect of microwave irradiation on spin-torque-driven magnetization precession in nanopillars with magnetic perpendicular anisotropy

Abstract

The effect of microwave irradiation on the spin-torque-driven magnetization dynamics is studied in (Co/Ni)-based nanopillar spin valves with perpendicular magnetic anisotropy. For this purpose, a setup was developed to measure the ac as well as the dc resistance of the nanopillar under applied fields and injected polarized currents, while irradiating microwaves with varying frequency (6-18 GHz) and power. We find that the microwave irradiation amplifies and maintains the precessional state of the eigenresonance within a larger field range. The experiments are discussed in comparison to micromagnetic as well as macrospin simulations utilizing the nonlinearized Landau-Lifshitz-Gilbert equation.
Fichier principal
Vignette du fichier
11 PRB Neckers.pdf (1.24 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

hal-02085974 , version 1 (01-04-2019)

Identifiers

Cite

N. Reckers, J. Cucchiara, O. Posth, C. Hassel, F. M Römer, et al.. Effect of microwave irradiation on spin-torque-driven magnetization precession in nanopillars with magnetic perpendicular anisotropy. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 83 (18), pp.184427. ⟨10.1103/PhysRevB.83.184427⟩. ⟨hal-02085974⟩
23 View
103 Download

Altmetric

Share

Gmail Facebook X LinkedIn More