Re-orientation of easy axis in ${\phi }_0$ junction

Abstract

We study theoretically a dynamics of ${\phi }_0$ junction with direct coupling between magnetic moment and Josephson current which shows features close to Kapitza pendulum. We have found that starting with oscillations along $z$-axis, the character of magnetization dynamics changes crucially and stable position of magnetic moment $\vec{m}$ is realized between $z-$ and $y$-axes depending on parameters of the system. Changes in critical current and spin-orbit interaction lead to the different stability regions for magnetization. An excellent agreement between analytical and numerical results is obtained for low values of the Josephson to magnetic energy ratio.

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Cited by in corpus (17)

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• Thermal noise effects on the magnetization switching of a ferromagnetic anomalous Josephson junction
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• Electrical control of magnetization in S/F/S junctions on a 3D topological insulator
• Generating superconducting vortices via spin-orbit coupling
• Bifurcation structure and chaos in nanomagnet coupled to Josephson junction
• Switching current distributions in ferromagnetic anomalous Josephson junctions
• Kapitsa pendulum effects in Josephson junction + nanomagnet under external periodic drive
• Magnetic Flux Pumping in Superconducting Loop Containing a Josephson $\psi$ Junction
• Hysteresis and chaos in anomalous Josephson junctions without capacitance
• Magnetic eigenmodes in chains of coupled phi0-Josephson junctions with ferromagnetic weak links
• Collective magnetic and plasma excitations in Josephson $\psi$ junctions
• Buzdin, Shapiro and Chimera Steps in ${\phi }_0$ Josephson Junctions. II. Bifurcation, Switching, and Hysteresis
• Resonance phenomena in a nanomagnet coupled to a Josephson junction under external periodic drive
• Microwave induced tunable subharmonic steps in superconductor-ferromagnet-superconductor Josephson junction
• Originality of resonance and locking phenomena in SFS ${\phi }_0$ Josephson junction