2022/10/01 by Aliasghar Janalizadeh, I. R. Rahmonov, Janalizadeh, Aliasghar +7
Engineering · Physics and Astronomy · #FOS: Physical sciences #Magneto-Optical Properties and Applications #Mechanical and Optical Resonators #Physics of Superconductivity and Magnetism #Superconductivity (cond-mat.supr-con)
paper · pdf · doi:10.48550/arxiv.2210.00366
openalex publication_date 2022/10/01 · openalex created_date 2022/10/06 · openalex updated_date 2026/07/28
We demonstrate the manifestations of the nonlinear features in magnetic dynamics and IV-characteristics of the φ0 Josephson junction in the ferromagnetic resonance region. We show that at small values of system parameters, namely, damping, spin-orbit interaction, and Josephson to magnetic energy ratio, the magnetic dynamics is reduced to the dynamics of the scalar Duffing oscillator, driven by the Josephson oscillations. The role of increasing superconducting current in the resonance region is clarified. Shifting of the ferromagnetic resonant frequency and the reversal of its damping dependence due to nonlinearity are demonstrated by the full Landau-Lifshitz-Gilbert-Josephson system of equations, and in its different approximations. Finally, we demonstrate the negative differential resistance in the IV--characteristics, and its correlation with the foldover effect.