Coupling of spin-transfer torque to microwave magnetic field: A micromagnetic modal analysis

Micromagnetic computational spectral mapping is used to analyze the magnetic oscillation modes excited by either a microwave circularly polarized magnetic field or a spin polarized current flowing through Permalloy (Py) spin valves. Micromagnetic spectra mapping method is an adequate tool for describing the temporal evolution of the magnetization spatial patterns in nanostructures.