Abstract
Spin-torque-induced excitations are numerically analyzed for an MgO-based magnetic tunnel junction nanopillar composed of a CoFe/Ru/CoFeB synthetic ferrimagnetic layer and a CoFeB layer. By performing macrospin simulations, we demonstrate that dynamical coupling between ferromagnetic layers through dipole-dipole interactions has a significant influence on the oscillation modes. In particular, we show that acoustic-like and optical-like oscillation modes established by the dynamical dipolar coupling emerge, depending on the in-plane bias field. The optical-like oscillation mode is stable under a wider current range than the acoustic-like one.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
